Mongol leader Genghis Khan (1162-1227) rose from humble beginnings to establish the largest land empire in history. After uniting the nomadic tribes of the Mongolian plateau, he conquered huge chunks of central Asia and China. His descendants expanded the empire even further, advancing to such far-off places as Poland, Vietnam, Syria and Korea. At their peak, the Mongols controlled between 11 and 12 million contiguous square miles, an area about the size of Africa.
The correct answer to this open question is the following.
You did not specify what war you are talking about. Trying to help you we are going to assume that you are talking about World War I.
In addition to fighting in the army, European colonies contributed to the war effort in that these colonies sent supplies and food to the war front in Europe.
European superpowers had colonies in Africa, India, and Asia, places where there were plenty of natural resources and raw materials that were much needed by European countries during World War I. Great Britain and France were the European countries that used most soldiers from their colonies after many white troops were killed on the battlefield.
Because they where trading with them bringing in lots of money
In America, we rely on public discourse and the open forum of ideas to shut down much of that damaging discourse.
The correct answer is number 2) Cold War confrontations.
Unfortunately, you forgot to attach the map. Where is the map?
Without the map, just you know the information. We don't.
However, trying to help you we did some deep research and found one map that highlights places where the United States and the Soviet Union had conflicts and confrontations during the Cold War years.
The places highlighted on the map are the Island of Cuba, North and South Korea, and North and South Vietnam.
So the correct answer indeed is:
A historian could best use this map to study the topic "Cold War confrontations."
During the tense years of the Cold War, the Soviet Union and the United States competed in the arms race, the space race, and the spread/containment of Communism in different places of the world such as the Island of Cuba Korea Vietnam.