Answer:
The German invasion of Poland. France and Britain told Hitler they would go to war with Germany if he invades Poland, so Hitler promptly invaded Poland.
Explanation:
Answer:
B. Afghanistan
Explanation:
After the Russian Revolution of 1917, the Soviet Union incorporated most of Central Asia; only Mongolia and Afghanistan remained nominally independent, although Mongolia existed as a Soviet satellite state and Soviet troops invaded Afghanistan in the late 20th century.
The answer is D. One state sues another state.