How did the American constitutional system itself specifically develop from a covenant, to a charter, to a constitutional system?

Virginia has 11 people in the house and 2 in the senate. how many electoral votes foes it have? where is this addressed?

Between 1820 and 1860, the united states received a huge number of immigrants from european nations. on the map, identify the state where the most immigrants moved in search of jobs.

What happened in georgia as a result of the supreme court ruling in brown v. board of education?