I think both options are true!
I would say that the US and the Soviet Union at the end of WWII withdrew their troops as soon as a demilitarized zone was created. Also, I am sure they would require a peace treaty to be signed with Germany before withdrawing troops.
Answer:
During his rule he expanded his empire, making him the most powerful man in the world. He conquered the Persian empire, reunited Greece, and restored the Corinthian League
Explanation:
i just looked up what you typed and did research about it. Also typed it into google after and this extremely simplified answer came up
The Indo-European tribe called the Aryans invaded and conquered the Indus Valley Civilization, but many scholars believe that the collapse of the Indus Valley Civilization was caused by climate change.
Volcanic eruptions are formed when so much PRESSURE from the magma inside the volcano builds up to it's boiling point.
An example would be like shaking soda as soon as the pressure is released there is foam. It's then same concept but with magma aka lava
Hope this helped