World War II was a war that involved nearly every part of the world during 1939 1945. The participants were the Axis powers (Germany, Italy, and Japan) and the Allies were (France, Great Britain, the United States, the Soviet Union, and, China). The war was essentially a continuation because of the disputes left unsettled by World War I, the treaty of versailles being a big part. The 40,000,000 to 50,000,000 deaths incurred in World War II make it the bloodiest conflict, as well as the largest war, in history. The technology that was used in WWII had a major impact in the overall outcome of the war.The allie, the big four Allied powers of World War II were England (Great Britain, the United Kingdom), the United States of America, the Soviet Union (U.S.S.R., Russia), and France. These powers fought against the axis powers these being, Germany, Italy and Japan. Things started to get really bad when Hitler announced that Germany would “liberate” the ethnic Germans in Czechoslovakia, England and France recognized the growing danger of a second world war caused by German expansionism. The technology of WWII played a major part in the overall outcome of the war. There where many types of machines, weapons and technologies used in this war. There were over 17 different types of bomber planes alone, just to list a few for Great Britain and the United States, Great Britain had the Avro Lancaster they made a total of 7,377 these planes. From the start it proved to be a well-designed aircraft and few changes were needed before moving into production. United States had the B-17 bomber, this plane could fly 200 MPH at over 10,000 feet with a heavy bomb load on it for over 10 hours. These are just a couple of the bomber planes used.The bombings of Hiroshima and Nagasaki. On August 6, 1945, during World War II (1939-45), an American B-29 bomber dropped the world’s first deployed atomic bomb over the Japanese city of Hiroshima. The explosion wiped out 90 percent of the city and immediately killed 80,000 people. This bombing was because was becoming too powerful and we had no other way to wipe them out. Three days later, a second B-29 dropped another A-bomb on Nagasaki, killing an estimated 40,000 people. These attacks were mainly do to do japan attacking Pearl Harbor. destroy or damage nearly 20 American naval vessels, including eight enormous battleships, and over 300 airplanes. More than 2,400 Americans died in the attack, including civilians, and another 1,000 people were wounded. The first radar system was produced in 1935 by the British physicist Sir Robert Watson-Watt, and by 1939 England had established a chain of radar stations along its south and east coasts to detect aggressors in the air or on the sea. By September 1938 the first British radar system, the Chain Home, had gone into 24-hour operation, and it remained operational throughout the war. The Chain Home radars allowed Britain to successfully deploy its limited air defenses against the heavy German air attacks during the beginning of the war.