Question

What forces drove the revolutions of the 1700s 1800s and 1900s

Answer 1

in a galaxy far far away the rebellion fought against the dark side for many years until a young hero aliased only to find out his father was a evil warlord that had the power of mind control which he drew  his power from the universe but yet was defeated. 

Answer 2

Enlightenment ideas about government provided a philosophical basis for the revolutions of the late 1700s and early 1800s. they replaced them with more democratic forms of government. They also triggered a series of nationalist uprisings that let to the formation of new nation-states.