Final answer:
In the Middle Colonies, aside from agriculture, economic opportunities included the fur trade and growth in the shipbuilding industry due to merchant-driven technological innovations.
Step-by-step explanation:
The economic opportunities available in the Middle Colonies during the colonial period extended beyond agriculture. While they indeed grew a variety of grains and raised livestock, they also engaged in other economic activities to bolster their growth.
One of these activities was the fur trade, which became quite profitable alongside the sale of lumber products. Additionally, these colonies experienced growth in the shipbuilding industry, driven in part by technological innovations introduced by merchants to improve export trade efficiency.