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Fifteenth Ammendment
The Fifteenth Ammendment was passed, allowing citizens to vote regardless of "race, color, or previous condition of servitude." Image: http://www.loc.gov/rr/program/bib/ourdocs/15thamendment.html -
Yellowstone National Park
The Yellowstone National Park became the first official national park. Image: http://famouswonders.com/yellowstone-national-park-in-wyoming/ -
National League of Baseball
The National League of Baseball was the first professional sports team league to be established. Image: http://en.wikipedia.org/wiki/National_League -
Garfield's assassination
James A. Garfield, the 20th president, was assassinated after being president for less than four months. Image: http://en.wikipedia.org/wiki/Assassination_of_James_A._Garfield -
National Geographic Society
The National Geographic Society was founded, and grew to be one of the most significant nonprofit educational organizations in the world. Image: http://waaba.org/tag/national-geographic/ -
USS Maine
The sinking of the USS Maine in Havana Harbor was a critical catalyst to the Spanish-American War. Image: http://en.wikipedia.org/wiki/USS_Maine_(ACR-1) -
Open Door Policy
The Open Door Policy was established to ensure that all countries could trade equally with China, and no country would have unfair control over China. Image: http://christophermartell.blogspot.com/2013/06/the-open-door-policy-boxer-uprising-and.html