which document encouraged public support for declaring independence from great britain?

In his 47-page treatise Common Sense, Thomas Paine urged residents of the Thirteen Colonies to secede from Great Britain in 1775–1776. Paine assembled moral and political reasons in his writing, which was clear and powerful, to encouraged regular people in the Colonies to strive for egalitarian governance.

At the start of the American Revolution, on January 10, 1776, Common sense was written anonymously and quickly went viral. At bars and gathering places, it was frequently sold, distributed, and read aloud. It had the biggest selling and circulation of any book published in American history relative to the population of the colonies at the time (2.5 million). It is still in print today and was the all-time best-selling American book as of 2006.

A compelling and passionate argument for independence that had not yet received serious intellectual examination was made public by Common Sense. In order to portray a uniquely American political identity, Paine linked independence with common dissident Protestant convictions and organised Common Sense as though it were a sermon.