The us president at the start of the mexican-american war was james ...

James K. Polk

Explanation:

He served from 1845 to 49

Mexican-American war was from 1846 to 48

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.

calvin taught his followers that human beings needed to follow strict rules to overcome their nature and do good. second choice