Thomas paine's common sense was important because it

Thomas paine's common sense was important because it instigated the American colonist to fight for the independence. 
The pamphlet of common sense was written in 1776, in the time which was shaping the American revolution war. The first battle of independence happened in 1775, yet there was no firm determination among some colonist who were hoping reconciliation of any kind with Britain, because there was no serious hatred towards the monarchy system.
But, in 1776, the pamphlet published where it stated ideas on why monarchy is bad model of governing system and American colonies must be free. Thus, the common sense published in 1776 build up independence sentiments, convincing the undecided colonies for independence. After six months of the common sense publication, independence was declared in July, 1776.