Northerners who came to the south after the civil war were known as: a. radical republicans. b. carpetbaggers. c. bushwhackers. d. know-nothings.

The correct answer is option B. "Carpetbaggers".

Explanation:

A Carpetbagger is a derogatory term for political candidates who seek election in an area where they don't belong and don't have local connections. In American history, this term was used by former Confederates to name Northerners who came to the South after the American Civil War since they perceived that they were looking to exploit the local populace for their own benefit.

the answer is

disease was the number one killer of native peoples. they had had little exposure to the diseases of europe. this led to some villages being almost completely wiped out and some tribes destroyed.