What happened as the population grew in western territories? (Points : 3) Many people left and returned to the East. New states such as Colorado, the Dakotas, and others were admitted to the Union. The territories required government subsidies. Railroads limited employment.
Generally speaking, as the population grew in western territories, "New states such as Colorado, the Dakotas, and others were admitted to the Union," since there were population quotas for new state admissions.