Like the commercial progressive?
In the 1850s they defended slavery in the United States, and promoted its expansion into the West against northern Free Soil opposition.
It’s because they are independent I believe I am not sure but lol I’m an Asian
I hope it kinda helped
“The political geography of this nation was a product of various treaties and acquisitions that eventually resulted in the country extending from the Atlantic to the Pacific Ocean.”
So the answer must be:
C.) The United States gained the area between the Atlantic Ocean and Appalachian Mountains from the original thirteen colonies in 1770.