The Navigation Acts of 1651 related to colonial militias.
trade.
shipbuilding
whaling.

Trade.

Explanation:

The Answer is Trade, Because:-

The Navigation Act of 1651, aimed primarily at the Dutch, required all trade between England and the colonies to be carried in English or colonial vessels, resulting in the Anglo-Dutch War in 1652.

In effect, these acts created serious reductions in the trade of many North Carolina planters and merchants.

c it says nothing about connecting those 2 seas.

answer; i believe that the correct answer is (c) arctic tundra;