What do you think are Paine's most important arguments in "Common Sense" that made it so effective?Specific quotes would be a really effective way...

Much of Paine's work focuses on the aspect of a political separation.  When he summarizes the relationship between the Colonists and Britain as one where "'Tis time to part," it succinctly articulates the state of conditions between both nations.  Essentially, Paine lays out the economic and political rationale for declaring independence.  In attempting to convince the colonists of the need to leave, Paine paints England as an abusive partner in a relationship that can no longer be salvaged.  It is one where Paine suggest a reasonable argument for leaving.  The violation of the colonists' political state of being, where the freedom to live as one pleases, is only matched by the economic transgressions, the ability to make and keep material wealth, form the crux of Paine's argument.  This becomes critical in Jefferson's writing, where he compares King George to a "royal brute," a direct allusion to Paine's work.  At the same time, the second section of the Declaration of Independence, known as the List of Grievances, is reminiscent of "Common Sense," as Jefferson lists the economic and political wrongs that England has committed against the Colonists.