Desire to bring their values to other people. Some believed mother races were inferior and had to be "Americanized".
It hurt the south for a while, slave labor was good for the south's economy but bad for competition up north because nobody could find a job if all the slaves worked for free. The removal of slavery cemented this competition-based method into America.
Because of the german refuse too stop the submarines restriction policy which kept blowing up our ships.
Thomas Jefferson called his election the revolution of 1800, because it marked the first time that power in America passed from one party to another. He promised to govern as he thought the Founders would want, based on decentralized government and trust in the people to make the right decisions for themselves
