Events that lead to WW2.

In September 1939 Germany invaded Poland this is also remember as the start of the war. during the same time japan took over 1/4 of China. Japan lost about 500,000 troops during the invasion and spent 10 billion. In 1940 Germany held almost of all western Europe. later that year the United States started getting involved with other nations but completely in the war. They gave britain 50 old navel destroyers. In exchange the US got use of navel and air bases. Early next year hitler invaded Yugoslavia. In mid 1941 germany also invaded the soviet union. Later that year is when the US got involved when the japanese bombed Pearl Harbor. The next day we declared war on japan so did britain. a few days later Germany and Italy declared war on the USA.