Answer:
The invasion of Poland marked the start of World War 2. Britain and France were not convinced that it was a defensive war and it all began world war 2. Poland was also divided between the USSR and Germany so the Western Allies saw that their tactic of starving Germany of resources would be impossible since the USSR continued to supply the Germans at that stage of the war. New tactics and technology were tested in Poland and those same tactics will later be even more developed against France.
The United Nations decided that they needed to have a peace-keeping force, a middle man, and treaties, so that they could try to stop wars from happening.
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Answer:
He was the chairman of the Student Nonviolent Coordinating Committee (SNCC) from 1963 to 1966. Lewis was one of the "Big Six" leaders of groups who organized the 1963 March on Washington. He fulfilled many key roles in the civil rights movement and its actions to end legalized racial segregation in the United States.