Checked this out because I felt the need to read Common Sense. Dipped into the reply to it, "Plain Truth," but found the style annoying. Also trying to read the Jefferson piece.
Common Sense is the one where Thomas Paine argues that it is sensible for America -- as a continental entity with ample resources and [white] civic youthfulness -- to strike out own its own and reject England. He also expounds upon a preferred form of representative government and argues that a new nation should of course reject the degradation of a monarchy. I was particularly struck by Paine's attention to the question of where this line of kings came from in the first place: likely descended from "the principal ruffian of some restless gang" which took over this land (p 414).
In contrast to amenable and articulate arguments for a new "Continental form of government" (p 430) stands Paine's understanding of equality and liberty which are so different than mine. For instance, Paine calls King George an "enemy to liberty" (p 428), yet we know that the colonies included slave-owners, minimal rights for the continent's natives, and women with no rights.