The correct answer is Harriet Tubman
theres no repeated revolutions so A is wrong
C is wrong as lack of innovative spirit would not help industrialization
D is wrong as there were not strong unions yet
so only choice left n the right ans is:
B) Its many coal deposits and navigable rivers helped to spur the Industrial Age.
The difference between the words swarmed and assembled should give you a clue as to what the answer is. Swarmed means to move somewhere in large numbers, usually crowding around something of interest to get a closer look. Assembled means to gather together in one place for a particular reason. This is usually done in an orderly fashion.