Need help with 2 history questions about World War I

1. World War I ended in 1918, but the Treaty ofVersailles left many issues unresolved and in 1939, World War II began. In abrief essay, describe the major causes of World War II, and explain how theresponse of the League of Nations and of Britain, France, and other Europeannations to Axis aggression contributed to the start of the war.2. Manyfactors led to the end of communism in the Soviet Union and Eastern Europe, andsubsequently the end of the Cold War. Choose one of the topics below and in abrief essay, identify the person or event and explain the role that the personor event played in helping to end the Cold War. Alexander Solzhenitsyn Helsinki Accords Pope John Paul II Solidarity Trade Union Ronal Reagan Mikhail Gorbachev Hungary