Answer:
world war two had three main causes
the following are the causes
Explanation:
causes are the Treaty of Versailles, the failure of peace efforts, and the rise of dictatorships.
starting of the world war
On December 7, 1941, following the Japanese bombing f Pearl Harbor, the United States declared war on Japan. Three days later, after Germany and Italy declared war on it, the United States became fully engaged in the Second World War.
