It caused the civil war. The industrial revolution in the North, during the first few decades of the 19th century, brought about a machine age economy that relied on wage laborers, not slaves.
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The Emancipation Proclamation was a presidential proclamation that was made amidst the Civil War. The proclamation went into effect on January 1, 1863. The proclamation stipulated that all slaves were free in states that were still in rebellion against the Union. This proclamation impact the 11 states that were still in rebellion at the time. The order was made under the President's Constitutional authority as commander and chief of the U.S. military and was not a law that was passed by Congress.
Republican politician Theodore Roosevelt unexpectedly became the 26th president of the United States in September 1901, after the assassination of William McKinley. Young and physically robust, he brought a new energy to the White House, and won a second term on his own merits in 1904.
During World War II, the organization that was charged with transforming the United States economy into a wartime economy was the War Industries Board (WIB). The War Industries Board was a government agency group formed in July 28, 1917. They were the ones that coordinate the purchases of war supplies between the War Department (Department of the Army) and the Navy Department. Because of what they do, they made the economy more into spending their money on things for war than other items. They made the U.S priorities the War.
