The US wanted Japan to surrender and end WW2. Because the Japanese bombed Pearl Harbour, the US wanted revenge.
the US decide to drop two atomic bombs on Japan, not china
In the space of three days in August 1945, the US dropped atomic bombs on two cities in Japan - Nagasaki and Hiroshima.
The USA only had 2 atomic bombs.
VJ day
Hiroshima & Nagasaki Japan.
the US decide to drop two atomic bombs on Japan, not china
Hiroshima, Japan
sure?
Japan never dropped the atomic bomb on anyone. They did not have that technology.
No, the Japanese military did not drop any bombs on the USA after the atomic bombs were used on Japan. The bombs and pending invasion by the Soviets and the Americans (and allies) motivated the Emperor Hirohito to surrender to the Allied Forces.
They did not, it was the other way round.
Hiroshima and Nagasaki
If you are referring to WW2, then the US stopped using atomic bombs on Japan because Japan agreed to surrender. Had they not, the US had plans and production setup to drop a total of 23 atomic bombs on Japan in 1945.
The cities were called Hiroshima and Nagasaki. The US dropped the atomic bombs onto Japan on August 6th and 9th 1945.
Two atomic bombs
Hiroshima and Nagasaki Japan
Both atomic bombs dropped on Japan were successful. What gave you the idea they weren't?