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The Monroe Doctrine declared that the Western Hemisphere essentially belonged to the United States. European powers were not allowed to interfere.
HS: It gave the United States claim to the territories in the New World.

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The Compromise of 1850 made California a free state, divided the remainder of the land from the Mexican Cession and let them decide on slavery through popular sovereignty. Also introduced the Fugitive Slave Law.

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It was a book written by Harriet Beecher Stowe about the conflict between and enslaved man and White slave owner.
HS: Its effect persuaded many Europeans and Northerners to regard all slave owners as cruel and inhuman

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When fighting broke out between proslavery and antislavery groups in Kansas
HS: Increased the tensions and debate over slavery in the United States

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This case decided that descendants of slaves were not American Citizens. This case also deemed the MIssouri Compromise unconstitutional.

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Abraham Lincoln was elected as president in the Election of 1860 as the Republicans nominee.
HS: Increased tensions between Northerners and Southerners. Heated up the debate of slavery because Lincoln thought that slavery was a moral issue

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The Civil war began over arguments about slavery and began when South Carolina seceded from the union. This was the bloodiest war up to date and ended with a Union Victory and the abolition of slavery.

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A speech given by President Abraham Lincoln that emphasized the idea that America was "dedicated to the proposition that all men are created equal."
HS: Advanced the cause of democratic government in the US and inspired democracy around the world

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After Lincoln was assassinated, andrew Johnson was left to deal with reconstruction after the war which ultimately failed.

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Russia was in control of Alaska, but it became an economic burden because of the threat of British takeover. Congress then bought Alaska for $7.2 million
HS: Expanded US territory

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The telephone was created by Alexander Graham Bell
HS: Improved communications and was an essential tool for business

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A secret society, The Knights of Labor, began a protest in Haymarket Square when a bomb was thrown and 7 police officers died. This painted the union movement as violent.

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Designed to break up tribal organizations. Divided the tribal lands into plots of up to 160 acres
HS: Wanted to make American Indians "civilized", but ended up killing most of the population due to disease and poverty

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George Pullman cut wages and fired leaders of the workers' delegation who came to bargain with him. The workers began a strike and the ARU told workers not to handle any trains with Pullman cars. President Cleveland used the army to keep the trains running
HS: First time government intervened in a strike

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This case said "Separate but Equal" was constitutional. However, segregation was very unequal and equality was not enforced.

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A war fought between the US and Spain because Spain did not follow the Monroe Doctrine and was involved in Cuba. US gained control of Puerto Rice, Guam, and the Philippines as a result of the war. Cuba also gained its independence
HS: Established US as a serious world power

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Hawaii was used as an imperial outpost for the United States and was seen as a pit stop to Asia or Oceania.

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McKinley was shot by an anarchist a few months after being inaugurated for the second time.
HS: McKinley was only the third US president to be assassinated. Roosevelt took office after him

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Construction of Panama Canal begins (1904)

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Construction of Panama Canal begins (1904)

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Roosevelt had to orchestrate a revolution in Panama for the US to start building the canal. They started construction in 1904 and ended in 1914, but not before hundreds of laborers lost their lives during contruction
HS: The canal would connect the Atlantic and Pacific oceans

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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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Roosevelt won the Nobel Peace Prize in 9106 for his work in settling the Russo-Japanese War
HS: Roosevelt helped bring peace in Europe/Asia