How did world war 2 progress in europe and in the pacific between 1939 and 1943?

The war began in Europe September 1939, when Germany invaded Poland under the advisement of chancellor Adolf Hitler, Britain and France declared war on germany but took very little action over months of time . 1940 Germany lanuched next hit by attacking Denmark nd norway, Belgium, the neatherlands, and france, they were all conquered with swiftness late summer 1940 Germany launched another attack on britan 1941 Hitler plotted, invaded greece and north africa nd failed. later 1941 germany invaded soviet union. Germany proved the when they tried to invade russia i

(d) it was complex and capable of highly organized efforts.