How did the northern region grow? a. by using the masses to businesses grow b. products such as cotton the northern economy grow c. by creating big businesses such as slaughterhouses within this region d. the evolution of the stock market, which increased the desire to make money

 The correct answer is :  C. by creating big businesses such as slaughterhouses within this region

Explanation:  The northern region grew because it became a region that was dedicated to the manufacture and sale of manufactured products, also the north grew because it had more free land, more space to build factories.

d) he bring down boss tweed and tammany hall.