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These were German Naval submarines.
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The Bessemer Process was the first inexpensive way to mass-produce steel from molten pig iron.
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Green Russel and Sam Bates found gold in Pikes Peak, which led to around 100,000 people moving to Colorado to mine for gold.
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This act provided 160 acres of federal land for people to live on as long they farmed and maintained the land.
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This act allowed for the creation of land grant colleges.
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The transcontinental railroad was officially completed, allowing for more unification of the United States.
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This was a battle between the Lakota and Cheyenne people and the United States Army.
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This was a movement formed to advance farmers' collective interests.
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Thomas Edison successfully made the first incandescent lightbulb.
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The Carlisle School was established in order to teach Native American children English and to immerse them in white culture.
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This was a federal law prohibiting immigration of Chinese laborers.
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Thomas Edison provided electrical lighting for Manhatten from Pearl Street Station.
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The Statue of Liberty was shipped over from France and reassembled on Liberty Island.
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This federation was focused on gaining the right to bargain on wages, work conditions, and benefits.
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This act set guidelines for how railroads could do business in order to avoid monopolies.
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This act broke up reservation land into individual land lots.
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This book showed the life of immigrants in squalor in NYC.
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This book was based on six principles of the sea: geography, physical conformation, territory, population, national character, and policy of government.
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This act outlawed business practices that restricted competition and interstate commerce in the marketplace.
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This was the massacre of 300 Lakota people by the United States Army.
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Turner published his thesis on the impact the western frontier had on the nation's identity.
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Railroad workers went on strike, paralyzing the railroad network in the United States.
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This case ruled in favor of racial segregation as long as it was "separate but equal."
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This case was in favor of the limitation of hours for miners and smelters.
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This war began after the explosion of the USS Maine in Cuba.
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Hawaii was annexed due to the fear of Japanese occupation on the islands.
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The United States paid Spain $20 million to annex the Philippines.
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This act funded irrigation and construction projects.
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This case prohibited bakers from working more than 10 hours a day and 60 hours a week.
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This book focuses on the terrible conditions of meatpacking workers.
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This act prohibited the sale of misbranded food or drugs.
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This case limited the hours of female employees to ten hours per day.
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The NAACP (National Association for the Advancement of Colored People) is a civil rights organization that was founded to combat violence against black Americans during the 1900s.
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This case covered illegal alien immigration.
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This allowed voters to cast direct votes for US Senators.
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Ford Invented the assembly line, moving work around from worker to worker to allow for more efficiency.
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This act created a national currency and monetary system.
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This act prohibited price discrimination.
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Gavrilo Princip shot and killed Franz Ferdinand.
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The Panama Canal is an artificial waterway, created to ship goods more efficiently between the Atlantic and Pacific Oceans.
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The RMS Lusitania was torpedoed by Germany.
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The United States declared war on Germany.
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This act required all men from 21 to 45 to register to military service.
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WWI officially ended on this date.
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This gave women the right to vote.
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This limited the number of immigrants allowed entry into the US.
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This act discriminated against southeast European and Asian immigrants.
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This case was a publicity stunt for a small town based on the ethics of teaching evolution in high school.
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This banned the manufacture, sale, or transportation of alcohol.