What man is responsible for creating the idea for assembly-line production, which drove down the cost of manufactured goods?

Henry Ford

Explanation:

Drawing upon examples from the meatpacking industry, the American automobile manufacturer Henry Ford designed an assembly line that began operation in 1913.

RANSOM E. OLDS

answer; /// i believe that the correct answer is (d)the huang he river valley;

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.