Who lived in the north and south before the civil war? Please help thanks!

The North had an industrial economy, an economy focused on manufacturing, while the South had an agricultural economy, an economy focused on farming. Slaves worked on Southern plantations to farm crops, and Northerners would buy these crops to produce goods that they could sell.

Explanation:

answer; i believe the correct answer is (4) flip a coin as each participant arrives,heads indicates assignment to the first group: tails indicates assignment to the second group;

answer; cultural trait;