How did mercantilist policies create tension between great britain and the colonies

The policies that have been created causes tension to colonies and Great Britain by restraining and stopping settlers and colonists from engaging in trade with most foreign countries. It leads the colonist to arranged boycotts of goods of the British.

The commercialism system never visualized the community to become self-reliant and self-sustaining. 

why was the national assembly formed by the third estate?

the estates-general had not been assembled since 1614, and its deputies drew up long lists of grievances and called for sweeping political and social reforms. the third estate, which had the most representatives, declared itself the national assembly and took an oath to force a new constitution on the king.