When the world has two superpowers, the world is

multinational
multipolar
bipolar
communist

The correct answer is C) bipolar.

When the world has two superpowers, the world is bipolar.

An example of this term was the Cold War years when the Soviet Union and the United States embraced in an arms race and the world lived tense moments through all those years. The two superpowers wanted to be ahead of each other. The Soviet Union wanted to spread Communism in different countries of the world but the United States wanted to stop it. This created conflicts in North Korea and Vietnam, among many other incidents such as the Cuban Missile Crisis of October 1962.

the fact that could also be added to column b is that during world war ii, specifically between the years 1941 and 1945, japan expanded its territory towards the indonesian territory in what was known later as part of the "pacific war". in that time, japan could conquer the philipines, singapore,   borneo, central java, malang, cebu, sumatra and various other islands of the area, therefore expanding its territory for a brief period of time.