When did civilization start in china?
a. along the east china sea

b. in the yellow and yangtze river valleys

c. in the foothills of the himalaya

d. along the coast of the yellow sea

B. In the yellow and Yangtze River valleys

B. In the yellow and Yangtze River valleys

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.

the answer here would be