After the French and Indian war ended in 1763 a peace treaty was signed in Paris according to which Britain gained control over Canada and other areas. Still, the Proclamation line made it clear that the colonists are prohibited from settling the lands that were once French, thus discouraging them from settling towards the west. The line was created along the <u>Appalachian Mountains
.</u>
The answer is reason.
Philosophers of the Enlightenment believed that answer can be found
through reasoning. There were two types
of reasoning during that time. You have
rationalism that relies on deduction and Empiricism which deals with
experience. It took root due to the liberal atmosphere at the time.