What did japan do to become an aggressor nation?

Explanation:

Facing the problem of insufficient natural resources and following the ambition to become a major global power, the Japanese Empire began aggressive expansion in the 1930s. In 1931, Japan invaded and conquered Manchuria, and Jehol, a Chinese territory bordering Manchuria, was taken in 1933. Hope that helps!!!

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.