Basically the south was more farmed based and as a result didn't have a lot of land that they could give up for factories and manufacturing buildings.
On the other side, the north was very industrialized and were able to produce mass goods which in return boosted their economy.
The answer would be the first one
Magnesium and calcium have similar chemical properties because they have the same number of electrons in their valence shells.
the answer to this question is <u>A</u>.
