The answer would be D. The nation doubled in size with Louisiana Purchase. They also took over Florida.
The one that declared organized resistance by southern states that would prevent racial integration in the south is : Senator Harry F. Bryd
This events was commonly known as the massive resistance, when senator harry unite all white politicians in the state to do a massive campaign about the cause
Hope this helps
the answer is C, Was the first foregin group to rule all of china
California became apart of the United States in 1850.