Which of the following economic activities flourished in the middle colonies? mining, because the mountains in the region had many gold deposits shipbuilding, because abundant forests offered good timber supplies tobacco farming, because slave labor made large-scale agricultural production cheap wheat farming, because the region had fertile soil and a mild climate

Wheat farming, because the region had fertile soil and a mild climate

Explanation:

Wheat farming is the economic activity that flourished in the Middle colonies because the region had fertile soil and a mild climate. The Middle colonies had more fertile soil and awesome weather than they knew what to do with. So they decided to farm wheat, which eventually gave them more grain than they knew what to do with. In fact, this region produces so much grain that it's often called the "breadbasket."

a memoir is the correct answer