Why would a longer growing season make southern colonies appealing to settlers?

Need on these last 2 questions on my social studies homework 5 and 6 then i’m done with the homework

The holocaust of world war ii resulted in a) the nazis effectively used propaganda to gain and hold power in germany. b) ethnic regimes carried out mass devastation. c) deporting all european jews to the island of madagascar. d) the systematic mass slaughter of european jews and and others in nazi concentration camps during world war ii.

Was the civil war inevitable? could anything have been done through compromise to stop it, or did it have to happen?