I think it’s C) demand for forced labor in american colonies by europe
There were many reasons for the Westward Expansion that conducted masses of Americans in the 19th century to the West. The most important were:
1) JOB OPPORTUNITIES.
2) MORE LAND.
3) MORE FARMING POSSIBILITIES.
4) FASTER TRANSPORTATION.
5) FREEDOM FOR RUNAWAY SLAVES.
Because they helped strengthen their industrial-based economy
<span>The state constitutions allowed for civil liberties, a separation of powers (so one branch could not become too powerful compared to the others), checks and balances (for the same reason), and limited government.</span>