Final answer:
Immigrants generally settled in the middle colonies, specifically in Pennsylvania, due to pursuing economic opportunities.
Step-by-step explanation:
The primary reason immigrants generally settled in the middle colonies, specifically in Pennsylvania, was pursuing economic opportunities. Settlers in the middle colonies benefited from the expansion of the fur trade as well as the sale of lumber products, grain products, and livestock. Grain, especially wheat and flaxseed, became the most important commodity in the middle colonies due to the long growing season and fertile land.