Answer:
All three nations were governed by monarchs, and the people wanted change. monarchy is when a place is governed by a king or/and queen. The people don't like it because the kings and the queens are unfair or bad. like the Russian monarchy turned into being communism monarchy.
The correct answer is Demilitarized zone (DMZ)
Explanation: Demilitarized Zone (DMZ), which divides the Korean Peninsula, became the emblem of the truce that ended the fighting in the Korean War (1950-53).
The location is a regular destination for American leaders who want to show their determination in front of North Korea.
The main reason was because of over population in a small confined area. They also moved father out west so they could get more materials or supplies.
I he best answer is 3 I am 87 percent sure