World War Two was the deadliest conflict in human history, claiming over 70 million lives (most of whom were civilians). It is generally accepted that it officially started on September 1st 1939, after Germany disobeyed the Allies and invaded Poland, causing Britain and France to declare war on Germany. The war ended in 1945 after the US dropped an atomic bomb on Japan when it refused to cease fighting, prompting an immediate surrender by the Japanese and an official end to the fighting. (more…)