World War 2 started after Germany invaded Poland and refused to retreat. It was Hitler who invaded, and France and Britain declared war on Germany after he refused to stop.
World War One ended with the Treaty of Versailles and started World War Two by forcing Germany to pay reparations and demilitarizing them making several million new unemployed Germans. Adolf hitler found a way to take that and make it a job by building a military and taking what he wanted. The appeasements made by both the U.S. and Britain gave hitler several countries until he invaded Poland then the world powers fought agains hitler and his army. I hope that helps!
To help keep the environment safe from the harmful chemicals contained in the bio weapons. Also, depending on what the bio weapon is, it may lead to other people, like civilians or freindlies, to get infected accidentally.
If there are options to answer from this question and I am thinking of the correct answers from the book then it is: The Chinese focused on organizing peasants and the Soviets focused on organized factory workers.
