The us population tripled between 1790 and 1830 primarily because of ?

Various factors are contributing to the rise of the population of the United States :

a) There was a large population of young Americans who were starting families.

b) There as a decline in mortality rate, thus further boosting the population.

c) The area was expanding as new states were merging, providing enough space for the growth of population.

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.