Why did America’s national identity change in the early 1800’s?

The early 1800s saw the United States quickly grow in size. New immigrants and new land meant a bigger and stronger country. It also meant displacing thousands of Native Americans and the continued spread of slavery.

Explanation:

answer; i do believe that the (14th)fourteenth amendment is the correct answer

powers  are  denied  to the  national governmentin three distinct ways: some  powers, such as the  power  to levy duties on exports or prohibit the freedom of religion, speech, press, or assembly, are expressly  denied  to the  national government  in the  constitution.