Island Hopping .
That is the short answer.
Admiral Nimitz and General MacArthur agreed on a two-pronged offensive loosely based on the War Department's prewar Plan Orange for war in the Western Pacific.
Nimitz' sailors and marines took the Central Pacific route, island hopping, bypassing enemy fortifications, establishing naval and air bases, luring the Japanese fleet into lopsided naval-air engagements heading for Taiwan to cut the maritime supplies to Japan.
MacArthur began in New Guinea and island hopped through the South Pacific toward the Philippines to which he had promised to return at the beginning of the war.
In the event, Nimitz opted for Iwo Jima over Taiwan. Both army and marine forces took part in the invasion of Okinawa where the tips of the pincers came together.
The US fought Nazi Germany in Europe and Imperial Japan in the Pacific.
The bombing of Pearl Harbour was the major instigator of American involvement in WW2.
The bombing of Pearl Harbor. In Oahu, Hawaii.
Fighting the Germans involved crossing the Atlantic Ocean. Fighting the Japanese involved crossing the Pacific Ocean. Without the US Navy, the US would NOT have been able to participate in WWII.
The fear of being invaded was not a justification for the increase in US involvement in Vietnam. The US withdrew from Vietnam in 1975.
False, US involvement in Vietnam was not reduced during the Kennedy administration.
Mexico lost half its territory and the US gained access to the Pacific. Both countries lost thousands of men (mostly volunteers) and at least to this date, provided Mexicans with a good reason to distrust any US involvement with Mexico.
How did the US go a isolationism foreign policy to a political and military involvement?
yes...
which genocide?
1954
1955.