Answer:
a
Explanation:
we know all of this due to all the events that have led to this
the Cold War is a conflict between the Communist nations led by the Soviet Union and the democratic nations led by the United States. The Cold War was a state of geopolitical tension after World War II between powers in the Eastern Bloc the Soviet Union and its satellite states and powers in the Western Block the United States its nato allies and others. Historians do not fully agree on the dates, but a common timeframe is the period between 1947 the year the Truman Doctrine a US foreign policy pledging to aid nations threatened by Soviet expansionism was announced and 1991 the year the Soviet Union fell.
Explanation:
combination of discoveries and circumstances lead to Scientific and helped spread its impact among the changes in society created by Scientific Revolution the most important were the mechanic the chemical philosophy and increase role of mathematics
Mesopotamia's rivers (Tigris and Euphrates) are key to their civilization.
Because of the rivers Sumerians (Mesopotamia's people) could trade and travel through them.
Not to mention just plain drinking water.
Another benefit of the rivers was irrigation.
