Answer:
Seaports
Step-by-step explanation:
The New England and Middle colonies have SEAPORTS which is what made it possible to transport goods.
For New England, some of the seaports they have include the likes of Portsmouth, in New Hampshire, sports in Kennebunkport, Maine, Portland, etc.
At the same time, the Middle Colonies have various significant ports such as New York ports and Philadephia ports.
Hence, in this case, the correct answer is "Seaports."