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when was the war 1 and why did it happen??

It Started on on the 28th of June 1914. It happened because of the assassination of Archduke Franz Ferdinand in Sarajevo.

Explanation:

July 28, 1914 – November 11, 1918. The assassination of Archduke Ferdinand of Austria, started a chain of events which lead to a war.

Explanation:

your answer would be just capitalism.

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.