Answer:
Sumer, located in Mesopotamia, is the first known complex civilization, developing the first city-states in the 4th millennium BCE.
Explanation:
I think the answer would be New World Order. After 25 years, the US had won over Moscow and thus ended the Cold War between Soviet Union and United States. I think one of the concerns of both US and USSR is to tackle the issue of terrorism. They have come to the conclusion that they should stop attacking each country and focus more on terrorism and economic development.
This is geography and the answer is coal oil and gold as well as iron, and nickel
A socialist principle would be that there should be no classes at all in a society and that governments should regulate the production and distribution of goods in the best interest of the people.
They used mirrors i believe