Question

The term carpetbagger was a nickname for

Answer 1

The correct answer: "People from the North that moved to the South after the US Civil War".

Carpetbagger was a pejorative denomination used by US citizens from the Southern states, former Confederates, to refer to people from the North who came to live in the South after the US Civil War. These "carpetbaggers" became targets of the white supremacist organization known as Ku Klux Klan because they supported the total integration in the US society of former slaves and they resided in the Southern states where the KKK operated.

Answer 2

A carpetbagger was portrayed as a lower-class schemer with little education who could carry everything he owned in a cheap carpet bag. 

The term most likely refers to the  Northerners who moved to the South after the Civil War, during Reconstruction.