I think you forgot to add the options but based on my research, the correct answer to this question is "Middle colonies." This region included pine forests and marshes. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help.
Answer:
The Cold War.. Military alliances were formed as the West grouped together as NATO, and the East banded together as the Warsaw Pact. By 1951, Europe was divided into two power blocs, American-led and Soviet-led, each with atomic weapons. A cold war followed, spreading globally and leading to a nuclear standoff.
Answer:
Global population (more info below)
Explanation:
Global population increased due to increased sanitation, medicines, and food production. Hope I helped!