I want to know the answer to the following question:
When did World War II start?
All the background I'm provided with is that "When World War II started in 1939, it divided the world into two alliances—the Allies (the United Kingdom and France at first in Europe, China in Asia since 1937, followed in 1941 by the Soviet Union, the United States); and the Axis powers consisting of Germany, Italy and Japan.[nb 1]". Is that enough to answer the question?
Answer: yes