What was the purpose to Thomas Paine’s Common Sense and what Foundational American document did it help inspire?

Arguing for a republican form of government under a written constitution, it played a key role in rallying American support for independence. Common Sense is a pamphlet written by Thomas Paine in 1775–1776 advocating independence from Great Britain to people in the Thirteen Colonies.

in 550 b.c.e. cyrus the great, the leader of the persians, conquered the medes and united the iranian people under one ruler for the first time. cyrus became the first king of the persian empire and went on to establish one of the largest empires in world.