Answer:
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Abraham Lincoln winning the President contributed most to the Civil War. After he won the election, southerners were scared that Lincoln would try to get rid of slavery and change their traditions. Once Abe Lincoln was elected, states started to secede (like South Carolina) from the Union just a couple months later. This secession ultimately lead to the confrontation at Fort Sumter, leading to the start of the Civil War.
The United States entered WWII after the Japanese bombed Pearl Harbor.
Native American tribes, including the Omaha, Oto, Missouri, Pawnee, Arapaho and Cheyenne, all ceded (gave up) land in Nebraska to the U.S. government. In all, there were 18 separate treaties between 1825 and 1892 in Nebraska alone. These treaties were a part of a much larger pattern of land transfers that allowed an explosion of European settlement. By 1850, the tribes had seen more people moving through along the Platte River. The Homestead Act, which gave free land to settlers, meant that large numbers of immigrants were now going to stay in the area. In this section, there are two major stories about Native Americans during the settlement period. First, there is the story of how native people met the challenges of living on this plains landscape. And second, there is the story of conflict as more and more people tried to live on the same land.
Because unity and equality matters everywhere. It was for the common good.
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