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

The second world war began with the German attack on Poland in 1939. On the occasion of Britain and France, the war has been declared to Germany, which spreads throughout the whole of Europe over the next year. On December 7, 1941, Japan arrived at Perl Harbor and damaged the American fleet to the extent that America could not for some time have been able to condemn Japanese operations in the Pacific. After this event America announces the war on Japan, and Germany announces the war on America. After the Perl Harbor attack, Japan continued its occupation of the Pacific, in late 1941 and in 1942, occupied a similar paxifical island like Guam, Wake. Philippines, etc. However, in mid-1942, British forces in India, as well as the Australian forces in New Guinea, managed to stop the Japanese advance. During this time in Europe, Germany occupied almost all countries as well as lunched the invasion of the Soviet Union on June 22, 1941. Over the years to come, the famous Eastern Front was a battlefield of great battles. The Battle of Stalingrad was decisive in 1943, which ended with the defeat of the Sixth German Army and, according to many historians, marks a milestone in the entire Second World War. This defeat for Germany was a disaster, the Nazi public was shocked and Germany for the first time recognized the defeat in the war. Thereafter, the Nazis are increasingly defeated on many fronts and the military morale of the German soldiers begins to fall. Guadalcanal was secured in the same year in 1943, and this is the first major achievement of the American Offensive in the Pacific, while US General Eisenhower was elected to command allied troops in Europe. The year 1943 begins slowly to mark the milestone in the Second World War.