Did US drop two nuclear bombs to japan?
Yes, US had to to end the war instead of letting it drag out at least another year.
Easy. Basically there were two types of nuclear bombs (Atomic bombs). One is fusion and the other is fission. Fusion bombs are Hydrogen bombs that were only invented and tested on 1950s. When America drop the bombs on Japan , it was fission type. Both Uranium and Plutonium in Hiroshima and Nagasaki respectively.
Countries use nuclear bombs to pronounce dominance to the world and show that they are not to be messed with. They are also a quick, extremely hard blow that kill many and can end conflict extremely fast, like in WWII the United States dropped two bombs on Japan and very soon afterwards, Japan surrendered because the fear of more bombs had weakoned civilian morale and Japan could not take another hit like that.
The war in the pacific ended by the dropping of the two atomic bombs by the United States. President Truman didn't want to waste more American lives in the war, so he ordered to drop the atomic bombs on the two cities of Japan. After the two bombs were dropped, Japan was surrendered and the World War II came to the end.