Why is East Africa referred to as the crade of humanity

Because that is where scientists believe the first humans originated from, and where the earliest civilizations started.

the correct answer is =   british soldiers attacked and killed five boston townspeople.

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.