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The 13th Amendment formally abolished slavery in the United States, a pivotal moment in American history following the Civil War.
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Laws passed by Congress to enforce Reconstruction and grant civil rights to freedmen.
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Encouraged Western migration by offering land to settlers.
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Linked the eastern U.S. to the West by rail for the first time.
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John D. Rockefeller's company grew into the biggest monopoly in the U.S.
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A major Native American victory against U.S. troops led by Custer.
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The first major U.S. law to restrict immigration based on nationality.
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National railroad strike that led to federal intervention.
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Supreme Court upheld racial segregation under “separate but equal.”
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U.S. defeated Spain, gaining control of the Philippines, Guam, and Puerto Rico.
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Gave American women the right to vote.
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Marked the beginning of the Great Depression.
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Federal programs launched to combat the Great Depression.
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After Pearl Harbor, U.S. joined the Allies in WWII.
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Allied troops stormed Normandy, opening a Western front.
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The first atomic bomb was used in war, ending WWII.
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Supreme Court ruled segregation in schools unconstitutional.
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Outlawed discrimination based on race, sex, religion, or national origin.
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Millions protested the war, especially after the Tet Offensive.
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President Nixon resigned due to a political scandal.