The Proclamation Line of 1763 runs roughly along the line of

Appalachian Mountains .

Explanation:

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 Appalachian Mountains .

china unilaterally claims the entire south china sea as sovereign territory, then builds artificial islands to bolster its claim. it suddenly activates an air defense identification zone over the east china sea, and threatens to down any aircraft that does not report its position. it builds roads into indian territory, then redraws the maps to show that it is actually chinese territory. the people's republic under president xi jinping is quickly becoming the bully of asia.

(1)representation based on state population (2)all states have equal representation apex