War, hate groups, and political disagreements
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It allowed for steel to be produced much more cheaply and efficiently, This made steel more available so enough is produced to build skyscrapers.
The Compromise of 1877<span> was a purported informal, unwritten deal that settled the intensely disputed 1876 U.S. presidential election. It resulted in the national government pulling the last federal troops out of the South, and formally ended the Reconstruction Era.</span>
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1) First modern credit card introduced. 2) First organ transplant. 3) First "peanuts" cartoon strip introduced. 4) Korean war begins. 5) Senator Joseph Mccarthy begins communist witch hunt. 6) U.S president Truman orders construction of Hydrogen bomb. Hope this helps :)