The Second World War started with German invasion of Poland on 1st September, 1939.
→ The War was fought between (1) Axis powers Germany, Italy and Japan and (2) Allied powers-England, France, USSR (Russia). USA (America) and their allies.
→ The Second World War that started in Europe reached Far-East with Japan's aerial attack on America's naval base at Pearl Harbour on 8th December, 1941. In retaliation, the USA declared war on Japan.
→ The entry of the USA swung the tide on the side of the Allied powers.
→ The War in Europe came to an end with the unconditional surrender by Germany on 8th May, 1945.
→ The War in the far-east came to an end with dropping of atom bombs on Hiroshima and Nagasaki by the Americans.
→ Japan surrendered on 14th August, 1945 and thereby the most destructive Second World War came to an end.