The probabilities are almost zero.
Just randomly they did.
Yes.
The atomic bomb did not exist until 1945, so no it could not be used by anybody in WW1.
In combat no, only the US has.
Not anybody nos yet.
if so it would not be published to anyone..........................
Yes, parts of it were bombed.
Castle bravo is the most powerful bomb ever IN THE US
has a gas bomb ever ben use
The most powerful bomb ever made was the tsar bomb.
The H-Bomb, or Hydrogen Bomb, has never been used in warfare- the bombs dropped on japan at the end of WW2 were ATOMIC bombs, which are not as destructive. The Hydrogen Bomb is very much more powerful than the atom bomb, and has only ever been exploded in tests. For full information, Google 'US Hydrogen Bomb' and see what comes up.
you mean a-bomb. no one has ever h-bombed anyone else. The dropping of the a-bomb was so important because a) it won the pacific for us in WWII, and b) it was such a tragedy