Short answers, pulled from the story.
Japanese carrier-based aircraft launched a surprise assault on Pearl Harbor at 7:55 a.m. that killed 2,403 Americans and knocked eight American battleships out of action. The attack destroyed 188 American aircraft and neutralized the United States Pacific Fleet while leaving three American aircraft carriers at sea unscathed.
By the end of 1941 Japanese forces had seized the American territories of the Philippines, Guam, and Wake Island. The fall of Singapore occurred on the 15th of February 1942 when 130,000 Indian, British, Australian, and Dutch personnel became prisoners of war.
On the 4th of June American dive bombers destroyed three Japanese carriers named Soryu, Kaga, and Akagi and a fourth carrier named Hiryu later that day. This loss shifted the strategic initiative to the Allies and allowed them to begin a protracted offensive campaign across the Pacific theater.
Allied submarines accounted for 56 percent of all Japanese merchantmen sunk while making up less than two percent of the US Navy. This underwater warfare destroyed about five million tons of shipping and cut off nearly all oil imports essential to Japanese weapons production.
The United States dropped atomic bombs on the Japanese cities of Hiroshima and Nagasaki on the 6th and the 9th of August 1945. Japan surrendered unconditionally on the 15th of August and signed a surrender document on the 2nd of September 1945.