What major events in World War II were affected by the attack on Pearl Harbor?

Almost all
major events inafter December 7, 1941 were affected by the attack on Pearl Harbor.  This is
because the attack on Pearl Harbor (and Hitlers ill-advised declaration of war on the US) got
the United States into the war.  US participation in the war had a tremendous impact on the war
both in the Pacific and in Europe.

Until the attack on Pearl Harbor, the
United States was not directly involved in WWII.  American public opinion was strongly opposed
to...