If this is a serious question humans either came from evolution or God made them and brought them to earth it's honestly whatever you believe in
Answer:
our ancestors needed to encourage cooperation and tolerance among relative strangers
Explanation:
Answer:
A. Some political leaders built successful careers by opposing
Communism.
Explanation:
Republican Senator Joseph R. McCarthy of Wisconsin, for example, dedicated most of his time trying to expose communists in the United States government. Senatore McCarthy convinced many Americans that their were communitsts leading something in the United States. In 1954, McCarthy attacked the U.S. Army and was condemned by Congress.
So basically bud they declared war because Germany had sunk the Lusitania and was therefore trying to abandon the policy against unrestricted submarine warfare