Who became a national hero when he successfully laid a telegraph cable across the Atlantic Ocean, allowing North America and Europe to better communicate? Alexander Graham Bell
Samuel Morse
Cyrus Field
Thomas Edison

Samuel Morse

Indeed, Samuel Morse studied the problem in 1842, two years before he sent his famous message from Washington to Baltimore, when he laid an insulated copper wire across New York harbor and transmitted an electric current through it.

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.