The three levels of government are structured into a system that is formed of three main branches, which are the judicial, the legislative and the executive. The executive branch is the leader, which is either the governor or the president, who's in charge of making and enforcing rules. This branch of the government enforces the laws established by the legislative branch. The judicial branch is responsible for settling legal disputes and determines whether or not laws are aligned with the state and federal constitution.
The proclamation was intended to prevent the outbreak of another costly war like the French and Indian war by preventing further expansion into the contested areas. it was also intended to keep the colonists near the coast.