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Buried in a routine annual message delivered to Congress by President James Monroe in December 1823, the doctrine warns European nations that the United States would not tolerate further colonization or puppet monarchs
HS-The Monroe Doctrine was caused due to the Collapse of the Spanish rule in Latin America during the Napoleonic war

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The Compromise of 1850 was a package of five separate bills passed by the United States Congress in September 1850
HS-The compromise of 1850 temporarily defused tensions between slave and free states in the years leading up to the American Civil War.

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Harriet Beecher Stowe wrote a story about a enslaved person that got really popular. HS: Helped the North understand the horrors of slavery and help push for the end of slavery in the US

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Violent outbreaks between pro-slavery and antislavery forces. HS: Kansas entered the Union as a free state

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Dred Scott Case 1857 was a landmark decision of the United States Supreme Court
HS-Held the U.S. Constitution did not extend American citizenship to people of black African descent, and thus they could not enjoy the rights and privileges the Constitution conferred upon American citizens.

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Abraham Lincoln won his election in a four-way contest letting the Republican Party and was the second time there was a republican candidate in the presidential race. HS: Led to the abolishment of slavery

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The American Civil War was a civil war in the United States. It was fought between the Union and the Confederacy, the latter formed by states that had seceded.
HS-Dissolution of the Confederate States,U.S. territorial integrity preserved, Slavery abolished, Beginning of the Reconstruction era, Passage and ratification of the 13th, 14th and 15th amendments to the Constitution of the United States

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The Gettysburg address was Lincoln's speech about how the Civil War was not only a fight to save the Union but also a struggle for equality for everyone. HS: Shifted Norths motivation to help emancipate the slaves

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The Reconstruction Acts had the South under Unions troops and for the South they had to accept the 14th amendment. HS: Ended slavery and changed the constitution to have everyone under equal protection under the law even though many many African Americans continued to be treated unfairly.

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On March 30, 1867, the United States reached an agreement to purchase Alaska from Russia for a price of $7.2 million.
HS-In Alaska, the Americans foresaw a potential for gold, fur and fisheries, as well as more trade with China and Japan. The Americans worried that England might try to establish a presence in the territory, and the acquisition of Alaska – it was believed – would help the U.S. become a Pacific power.

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On March 7, 1876, Alexander Graham Bell successfully received a patent for the telephone and secured the rights to the discovery. Days later, he made the first ever telephone call to his partner, Thomas Watson.
HS-Allowed people to communicate faster

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Haymarket Bombing 1886 was the aftermath of a bombing that took place at a labor demonstration on May 4, 1886, at Haymarket Square in Chicago, Illinois, United States.
HS- The Haymarket Affair created panic and hysteria in Chicago and increased anti-labor and anti-immigrant sentiment and suspicion of the international anarchist movement, throughout the country

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The Dawes Act of 1887 regulated land rights on tribal territories within the United States.
HS-The Dawes Act of 1887 law authorized the President to break up reservation land, which was held in common by the members of a tribe, into small allotments to be parceled out to individuals.

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The Pullman Strike was two interrelated strikes in 1894 that shaped national labor policy in the United States during a period of deep economic depression. First came a strike by the American Railway Union against the Pullman factory in Chicago in spring
HS-A federal judge's injunction against the Union boycott turned the strike's tide in favor of the Pullman Company. President Cleveland effectively finished the strikers off when he dispatched federal troops to Chicago, where they protected strikebreakers operating trains.

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Plessy v. Ferguson was a landmark 1896 U.S. Supreme Court decision that upheld the constitutionality of racial segregation under the “separate but equal” doctrine. The case stemmed from an 1892 incident in which African American train passenger Homer Plessy refused to sit in a car for Black people.

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The Spanish–American War was a period of armed conflict between Spain and the United States
HS-Closely tied with becoming a world naval power, the Spanish American War resulted in the U.S. becoming a worldwide economic power, able to extend its commercial reach while under naval protection.

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House Joint Resolution 259, 55th Congress, 2nd session, known as the "Newlands Resolution," passed Congress and was signed into law by President McKinley on July 7, 1898
HS-The Hawaiian islands were officially annexed by the United States. Sanford Dole became the first Governor of the Territory of Hawaii.

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William McKinley, the 25th president of the United States, was shot on the grounds of the Pan-American Exposition at the Temple of Music in Buffalo, New York, on September 6, 1901, six months into his second term. He was shaking hands with the public when anarchist Leon Czolgosz shot him twice in the abdomen.
HS-He got killed because they thought the government he ran was corrupt.

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Construction of Panama Canal begins 1904

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Construction of Panama Canal begins 1904

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The Panama Canal was first developed following the failure of a French construction team in the 1880s, when the United States commenced building a canal across a 50-mile stretch of the narrow Panama isthmus in 1904.
HS-Construction of the Canal shortened the route ships traveled when voyaging around the world.

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Teddy Roosevelt wins Nobel Peace Prize 1906

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Teddy Roosevelt wins Nobel Peace Prize 1906

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Theodore Roosevelt negotiated peace in the Russo-Japanese war and resolved a dispute with Mexico. HS: Monroe Doctrine was put into good use