Final answer:
Fertile soils in the Pennsylvania Colony allowed for successful grain production, especially wheat, and various other agricultural activities.
Step-by-step explanation:
The Pennsylvania Colony's fertile soils supported a diversity of agricultural activities. These soils were the foundation for growing a range of grains, including wheat and flaxseed, alongside a variety of vegetables and the raising of livestock. With a long growing season due to the region’s fertile land, agriculture thrived, and Pennsylvania became notably important for its grain production, especially wheat, which was a critical commodity for both internal consumption and export.
The colony's agricultural success not only secured its self-sufficiency but also positioned it as a key player in the broader economic landscape, showcasing the pivotal role of fertile land in shaping the prosperity of colonial societies.