The main cause of the second industrial revolution was, natural resources, abundant labor supply, strong government policy and new sources of power.
B.Two American Indians died.The answer is B I think.
Answer:
1. A policy first adopted by President Truman to stop the spread of Communism
Containment.
2. The United States and the Soviet Union during the Cold War
Superpowers
3. Nations that are politically and economically controlled by another country.
Satellites
4. A state of military and political tension between the United States and the Soviet Union after WWII
Cold War
5. A social, economic, and military barrier between the Soviet bloc countries and Western Europe after WWII
Iron Curtain
Spain signed a secret treaty