Answer:
i am not in high school bur most of this you can ask in google
Explanation:
In August of 1963, representatives of the United States, Soviet Union, and Great Britain all signed the "Limited Nuclear Test Ban Treaty." This treaty limited/prohibited the testing of nuclear weapons in outer space, underwater, or anywhere in the atmosphere.
B, the Incas- google Machu Picchu and you'll see precisely fitted blocks of stones in their buildings and structures
