Answer:
<h2>
10 key Second World War dates you need to know</h2>
<em>7 July 1937: Clash near the Marco Polo Bridge, close to Beijing. ...</em>
<em>10 May 1940: Germans launch offensive in the West. ...</em>
<em>12 August 1940: Battle of Britain begins. ...</em>
<em>22 June 1941: Launching of Operation Barbarossa. ...</em>
<em>7 December 1941: Attack on Pearl Harbor. ...</em>
<em>4 June 1942: Battle of Midway.</em>
<h2>And some causes</h2>
1<em>939: Hitler invades Poland. Hitler's invasion of Poland on 1st September 1939 marked the beginning of WW2 in Europe.</em>
<em>1940 (1): Rationing. ...</em>
<em>1940 (2): Blitzkrieg. ...</em>
1940 (3): Churchill Becomes Prime Minister. ...
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<em>1940 (4): Evacuation of Dunkirk. ...</em>
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<em>1940 (5): Battle of Britain. ...</em>
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<em>1941 (1): Operation Barbarossa. ...</em>
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<em>1941 (2): The Blitz.</em>
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<h2><em /></h2>
