15. B
16. D
17. F
18. E
19. A
20. C
Answer:
here I hope this helps I just googled it for you
Answer:
The population grew in medieval Europe largely due to climate change. As things warmed up, farms were able to produce more food, and people were able to circumvent diseases much easier.
Explanation:
He worried that attacking could provoke the Soviet Union to retaliate with nuclear weapons.