The main reason Thomas Paine wrote Common Sense was to persuade Britain that it could not govern the colonies well.
let foreign countries know that the colonies were ready to fight Britain.
persuade colonists that the colonies should become independent.
Force Southern colonies to support Northern ones in the coming war.

to persuade colonists that the colonies should become independent

persuade colonists that the colonies should become independent

Explanation:

the  seven  days  battles  were  a series of seven battles over seven  days from june 25 to july 1, 1862, near richmond, virginia,  during  the american civil war. the  seven  days ended with mcclellan's army in relative safety next to the james river, having suffered almost 16,000 casualtiesduring  the retreat.