The famous author of "Common Sense," which advocated for American independence from British rule, was Thomas Paine. Published in January 1776, this pamphlet made a compelling case for independence and challenged the legitimacy of monarchical rule. Paine's eloquent arguments and clear, accessible language galvanized public sentiment in favor of the Revolutionary War, promoting ideas of liberty and democratic governance. "Common Sense" played a crucial role in shifting the colonial mindset from reconciliation with Britain to outright rebellion, stimulating the American Revolution and influencing the foundational values of the newly established United States.