Answer :
As the population grew in Western territories, new states such as Colorado, North Dakota, South Dakota, and others were admitted into the Union. Therefore the answer would be B.
Answer: New states such as Colorado, the Dakotas, and others were admitted to the Union.
After the War of 1812, the Western territories saw an enormous influx of people. White settlers migrated from the East, looking for more land and better economic opportunities. The areas of the Old Northwest, the Old Southwest and the Far West saw the population double between 1800-1820, and by 1830, a quarter of the American people lived west of the Appalachians. The population expanded even more after the Civil War. Several new states were admitted into the Union, such as Colorado in 1876 and North and South Dakota in 1889.
