This is a strong essay that begins weakly. I'd take your last line and use it as your first.
I notice a tendency to phrase your sentences passively. This detracts from the power of your prose.
For example...
Emerging was the idea of a republic form of government, in which power came from the people, rather than a repressive monarch. Thomas Paine's influential pamphlet, "Common Sense," was read by a large audience in the colonies.
Instead...
The idea of a republic form of government, in which power came from the people, rather than a repressive monarch, began to emerge. Many colonists read Thomas Paine's influential pamphlet, "Common Sense."
Simone, EssayForum.com