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In April 1963, Martin Luther King launched a mass parade, petition, meditation and demonstration in Bermingham. In August, 250 thousand blacks and whites held a demonstration to Washington to protest against racial discrimination, and Martin Ruud King delivered a speech "I have a dream". Under the impetus of the black civil rights movement, the parliament passed the civil rights act in June 1964.

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Since 1960, many aspects of American history remain a continuation of post-war development. In addition to the cyclical downturn, the economy is still expanding; the population moving from cities to the suburbs continues to increase. In 60s, the Democratic Party Kennedy and Johnson came into power one after another, implementing a long-term fiscal deficit policy, expanding military spending and increasing welfare costs, and the economy continued to rise. At the same time, because they were involved in the Vietnam War, paid a huge amount of military expenses, consumed a lot of wealth in the United States, weakened the economic strength of the United States, and the economy of the Federal Republic of Germany and Japan developed rapidly and gradually became the rival of the United States.

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In July 1955, the United States, Britain, France and Soviet Union held a summit meeting, and the international situation eased. In 1957, the Soviet Union successfully launched the first man-made earth satellite, challenging the leading position of the leading science in the United States

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In 1952, Republican Eisenhower elected president of the United States with the promise of ending the Korean War. The DPRK armistice agreement was signed in July 1953. Under the invasion of the economic crisis of 1953-1954 years, the Eisenhower government has made adjustments in internal and foreign affairs, expanded the scope of the implementation of social insurance law, strengthened the nationalization of the scientific research work, and further developed the aerospace industry in order to ease the tension situation both inside and outside the country and abroad.

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The Truman administration pursued the cold war policy, put forward Truman doctrine, formulated the Marshall plan, and planned the establishment of the North Atlantic Treaty Organization. In the field of internal affairs, Truman put forward a "fair governance" program, but with little effect. In June 1950, the Korean War broke out.

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In April 12, 1945, Roosevelt died and Truman succeeded to the presidency. In May, Germany declared unconditional surrender. In July, the leaders of the United States, Britain and the Soviet Union held the Potsdam conference, and the United States and Britain reached agreement with the Soviet Union on issues such as Germany and Poland. The United States and Britain issued a Potsdam proclamation demanding that Japan surrender unconditionally. The United States and Soviet Union agreed on the Soviet Union's war against Japan. In August 6th, the US Army dropped the first atomic bomb in Hiroshima; in August 8th the Soviet Union declared war on Japan, and the 9 US Army dropped the two atomic bomb in Nagasaki, Japan surrender, and the end of the Second World War.

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The victory of the battle of Stalingrad in February 1943 has radically changed the situation in the European anti fascist war.  In July of the same year, the British and American forces landed at Sicily. It landed in the south of Italy in September. Italy surrendered in October.  In November 1943, Roosevelt, Churchill and Stalin held the Tehran conference.

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Germany attacked Poland in September 1939, and the Second World War broke out. Roosevelt signed the lease act in March 1941 to provide materials to the countries fighting Germany and Japan.  in August 14th, Roosevelt and British Prime Minister Churchill published the the Atlantic charter. In September 24th, the Soviet government declared its basic principles and then held the Moscow Three Kingdoms meeting, which laid the foundation for the cooperation between the United States, the United States and the Soviet Union. In December 7th, Japan attacked the Pearl Harbor and hit the US Pacific Fleet. The next day, the United States and Britain declared war on Japan. Britain and the United States were defeated at the beginning.

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Germany attacked Poland in September 1939, and the Second World War broke out. Roosevelt signed the lease act in March 1941 to provide materials to the countries fighting Germany and Japan.  in August 14th, Roosevelt and British Prime Minister Churchill published the the Atlantic charter. In September 24th, the Soviet government declared its basic principles and then held the Moscow Three Kingdoms meeting, which laid the foundation for the cooperation between the United States, the United States and the Soviet Union. In December 7th, Japan attacked the Pearl Harbor and hit the US Pacific Fleet. The next day, the United States and Britain declared war on Japan. Britain and the United States were defeated at the beginning.

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In November 1933, the United States established diplomatic relations with the Soviet Union and adopted a "good neighbor policy" to Latin America. The new economic crisis reappeared in 1937. The following year, Roosevelt adopted the way of expanding deficit spending to ease the crisis began to pick up again in late autumn of 1938. The Roosevelt administration passed the Fair Labor Standards Act in June 25, 1938 adopted second agricultural adjustment laws in February 16, 1938 to replace the first agricultural adjustment act, which was found unconstitutional.

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In 1932, Franklin I was elected president. He argued that the government should take action to end the great economic panic, and then launched a series of policies to alleviate many difficulties for the time being, such as the implementation of the "New Deal", which was widely intervened and regulated by the state, rectified gold and finance, rejuvenated industry and agriculture, and held relief businesses. It saved the serious economic crisis in the United States and strengthened the state monopoly capitalism.

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In October 1929, the United States first broke out the economic crisis, and then the capitalist countries successively plunged into the global economic crisis for 1929-1933 years. The great depression was an unprecedentedly severe economic crisis in the history of the United States. The impact of the  depression is not just on the US, but the rest of the world is implicated. The economic panic caused millions of workers to lose their jobs, a large number of farmers were forced to give up farmland, factories and shops closed, banks closed down, and there was a depression.

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In the 1923-1929 year, world capitalism entered a relatively stable period. In the United States, in 1923, the American industry and Commerce rose as a result of fixed capital renewal, the rise of construction industry, the expansion of automobile and steel industry, and the increase of commodity and capital output. At the same time, the second American business "merger wave"has spread throughout the banking and industrial sectors, especially water, electricity, gas utilities, and even to the retail business sector. Republican Coolidge was in the period of economic prosperity in the United States. Private monopoly capital has developed greatly. However, due to the malformed development and overproduction of the new industry in China, the proportion of all sectors of the national economy is seriously maladjusted and the production and consumption are disjointed, and the agriculture has been in a chronic crisis for a long time.

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In November 1918, Wilson signed the armistice agreement on Germany. World War I promoted the economic prosperity of the United States. After the war, the United States became a creditor country with a debt of $10 billion owing to a debt of 6 billion US dollars, and the United States became the richest country.

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In 1914, the first World War broke out. In 1917, the United States finally got involved in the whirlpool of the war and tried to play a new role in the world. After the first World War, the United States declared neutrality, provided arms to the belligerent parties, and soon extended loans to the allies. In 1916, Wilson was elected for re-election. In 1917, the United States declared war on Germany in April 6th after the sinking of American ships by German submarines. During the war, because of the interruption of foreign immigrants, the blacks moved northward, and they went abroad to fight.

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In the early nineteenth Century, the United States began to industrialize, and after the civil war, it entered a mature stage. In the Civil War The industrialization of the United States  Industrialization in the United States  In the less than 50 years before the first World War, the United States changed from a rural Republic to an urbanized country. [48] machines take the place of handwork, and products increase greatly. The national railway network has promoted the circulation of goods. In response to the needs of the masses, many new inventions should be in the city. The banking industry provides loans to facilitate the expansion of industrial and commercial operations.

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In the 1912 presidential election, Democratic presidential candidate Wilson came to power. Wilson took "new freedom" as a call for reform, reduced tariffs, established the Federal Reserve Bank system, and levied progressive income tax through the Clayton antitrust law . During the period, the United States engaged in armed intervention against the Western Hemisphere Mexico, Nicaragua and other countries in foreign policy.

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The United States supported Japan in the 1904-1905 years of Russo Japanese war. After the end of the Russo Japanese War, the United States and Japan negotiated a 1908 Luo Gaoping agreement.

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The American western war broke out in 1898. The United States defeated Spain, captured Cuba and Puerto Rico in the Caribbean Sea, Guam and Philippines islands in the Pacific, then merged the Hawaii archipelago in the Far East, and in 1899 the United States proposed a "open door" policy towards China.

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In March 1867, the radical republican party's reconstruction program was formally implemented, and the South entered the stage of democratic reconstruction. The 10 rebel states  has been divided into 5 military areas, which are administered by the federal government. Under the leadership of the federal military authorities, the southern states, between 1867 and 1870, reconvened a constitutional convention, set up a new constitution and elected a state parliament on the basis of the confirmation of the right to vote for black people, and established a mixed democratic government of black and white people at the core of the Radical Republicans. In February 1877, the Republican Party and the Democratic Party reached the DT Hayes agreement on the 1876 presidential election, and the reconstruction of democracy ended with a compromise between the north and the south. [42] marks the end of democratic reconstruction.

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Congress passed the Republican radical reconstruction act. In order to limit the power of the president, Congress passed the official tenure act and the amnesty bill. In disregard of the constraints of the official office of office of office, Johnson had the two order in August 1867 and February 1868 to order a supporter of the removal of the Congressional reconstruction bill, the post of Stanton army minister. So Radical Republicans launched an impeachment campaign against President Johnson. The impeachment case was successful at the end of one vote, but Johnson and the conservative forces he represented were badly hit.

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At the beginning of 1865, slaves fled, and the plantation economy was on the verge of collapse. The naval blockade imposed by the Northern Navy almost broke the trade between the South and Europe. At the same time, there were also rebels in the south, and many small farmers joined the "Federalists" to engage in anti war activities. The South deserters are growing with the day. Food and daily necessities are scarce.  in April 9, 1865, General Lee, the commander of the southern allied forces, surrendered. The civil war ended with a federal victory.

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In September 1864, the northern army of general Sherman attacked Atlanta in one move. After two months, the famous "March to the sea" began to destroy the enemy's various military facilities and hit the economic forces of the enemy and paralyzed the south economyon the east line, general Grant commanded the northern army to drive the enemy troops to the capital near Richmond.

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In 1863, the North was turned in the military. In July 1st of the same year, Gettysburg victory became a turning point in civil war. The initiative on the battlefield was transferred to the hands of the northern army.

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In April 1861, the 11 Southern states separated from the Union and fought without a declaration, occupying the Fort Sumter, and the civil war broke out. The North said it would pay no price for unification.

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In the 1860 presidential election, Republican candidate Lincoln won. The southern slave group, which had long been plotted against the rebels, decided to secede from the union.

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The anti slavery armed uprising led by Brown was suppressed in 1859.

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In 1857, the Supreme Court made the Scott decision, which means that the scale of slavery is pushed to the whole country.

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1856. Buchanan, the Democratic Party, was elected president. In fact, the Democratic Party has become a political party representing the interests of the slave owners.

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Lincoln promulgated the house law.     President Lincoln of the United States during the Civil War  American President Lincoln  in the civil war period Farmers who have cultivated land for 5 years of land in Western China have obtained the right to use 160 acres of land after paying 10 US dollars for documents, so that the vast farmers in the western areas have stood on the side of the abolitionist school and isolated the Southern Alliance.

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In 1854, Congress passed the Kansas Nebraska Act, which abolished the geographical boundaries between the slave state and the free state. It also abolished the Missouri compromise, and was strongly opposed by the northern industrial bourgeoisie.

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In 1850, the two sides reached a compromise after a dispute, and the Congress passed a serious law of fugitive slave hunting.

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In 1848, abolitionists, Democrats and Whig opponents of slavery organized the free soil party to set up free state in the western region. They made an agreement by doing this.

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In 1840, the Liberty Party,which advocated abolition movement, was founded.

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In the newly opened area in the west, whether to aolish the slavery or continue the slavery, the spokesmen in the north and the South have been arguing for a long time, thus becoming the theme of the national political struggle. In 1820, the North made concessions to the South and reached the Missouri compromise

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In August 1814, the British army seized the capital of Washington and burned the presidential palace and Parliament. But then the United States won. In December 1814, Britain and the United States signed a peace treaty in Ghent, Belgium.

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In order to maintain freedom of navigation, the United States began the second war against Britain in 1812 - 1814. In addition to the naval battle, British army has the most advantages.

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In 1803, America purchased about 2000000 square kilometers of Louisiana from France. Britain has been unwilling to lose its colonies in North America. The British ship continued to intercept US ships on the high seas and forced the acquisition of American sailors.

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In 1801, democratic republican Jefferson took the presidency. The Jefferson government abolished the 4 laws and regulations, reducing expenditure, reducing taxes, abolishing liquor tax and encouraging the export of agricultural products.

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In 1793, when the European powers intervened in the French Revolution, Washington adopted a neutral policy. The following year in November, the federal government and the United Kingdom signed the Treaty of Jay, which harmed the sovereignty of the United States.

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The federal government was established in 1789. In April, Washington became the first president of the United States (reelected in 1792).

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June 1788 was approved by 9 states. According to the constitution, the United States establishes a federal state with three powers, namely, legislation, administration and justice.

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In 1787, a constitutional convention was held in Philadelphia. Representatives of big states and small states agreed to the election of two senators in each state; on the issue of slavery, the northern part made a major compromise on the southern part, by default slavery, and in the tax and distribution of congressmen, the southern slaves were all calculated by the population of 3/5.

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In April 18, 1775, in Lexington and Concord near Boston, the colonial patriots fired guns of resistance and opened the curtain of the war of independence.

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In May 1780, Charleston was captured. Clinton thought that the victory of the South had been decided. The army returned to New York, and sent the Kang Valley to defend Charleston. However, the North American guerrilla forces joined the army, and hit the British army in Cowpens and guerfu, in the Jinshan area.

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In April 1781, the army began a strategic counter offensive. Green led the army south to fight in South Carolina, forcing the British troops to retreat to the shoreline. Cornwallis went up to Virginia in April 25th and attacked a large army led by Marquis Lafayette.

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In 1783, Britain and the United States signed the Paris peace treaty, and Britain officially recognized the independence of the United States. This fully demonstrates the courage and wisdom of the American people in the face of colonial rule.

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In July 4, 1776, the Continental Congress published the declaration of independence in George Washington, Philadelphia

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From August 1776 to September 1777, under the leadership of General Washington, the American people fought bravely against Britain and defended the new world. The subsequent great victory of Saratoga helped America and France to form an alliance in 1778. Spain and the Netherlands also joined the anti-British war, weakening Britain's blockade of the North American coast.

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In September 5, 1774, the representatives of the colonies except Georgia attended  the first Continental conference in Philadelphia, passed the resolution on the severance of all trade relations with the United Kingdom and then passed the petition to the king of  British through the "Declaration on colonial rights and resentment".