None, Japan surrendered shortly after the bombings of Hiroshima and Nagasaki, making the planned invasion unnecessary. The US did occupy Japan for several years after the war under the command of General Douglas MacArthur.
The United States of America was the country that developed the first nuclear weapons.
The US was the first to start testing nuclear weapons
The first Islamic country to have nuclear weapons was Pakistan.
because we were the first country to have them
US
The United States of America
Chemical weapons were first used in war by Germany in WW1.Nuclear weapons were first used in war by the US in WW2.
On May 28, 1998,First Pakistan became a nuclear power.
Nobody, the US was the first country to work out how to actually make nuclear weapons.
India conducted its first nuclear weapons test, codenamed "Smiling Buddha," on May 18, 1974. This made India the first country outside of the five permanent members of the United Nations Security Council to possess nuclear weapons.
The UK was the third country to obtain nuclear weapons, after the US and the USSR. The UK had its first successful nuclear weapon test in October 1952, a plutonium warhead similar to the one dropped on Nagasaki.
The first nuclear weapons were developed in the united States under the Manhattan Proyect which made the first nuclear bombs.