The Himalayas Mountains provide a natural barrier between India and the rest of Asia. I hope this helps!!!
B, both in real history and this chart, America created the first atomic weapons, and Russian spies during WW2 wanted to have the advantage of such power, lest America have a monopoly on pure Force.
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Increasing "Pressure or Temperature" is used to identify the layers of the atmosphere
Hope this helps!
Answer:
I think its gravity but not sure
