Answer: The invention of the Atomic Bomb. Two Atomic bombs were dropped on Japan, one in Hiroshima and one in Nagasaki
One of them is A, because Nubia and Egypt both ruled over each other at different times.
Theravada, the most ancient form of Buddhism, is the dominant school in Southeast Asia (Thailand, Myanmar/Burma, Cambodia, and Laos).
Mahayana Buddhism developed out of the Theravada tradition roughly 500 years after the Buddha attained Enlightenment.
The judicial branch (supreme court) can declare laws unconstitutional. This is a check because the legislative branch can create laws.
it was the reduction of nuclear weapons