This timeline covers all the political and military events that occurred within both North and South America between the years 1939 and 1945.
Yesterday, December 7, 1941 - a date which will live in infamy - The United States of America was suddenly and deliberately attacked by naval and air forces of the Empire of Japan.
Roosevelt 8th December 1941
American Mk.I 'Little-Boy' A-Bomb
Little Boy as a gun-type device in which two masses of Uranium 235 were brought together to create the explosive critical mass. Fusing was by means of modified AN/APS-13 tail-warning radar sets, the device being detonated approximately 1,900ft above the target.