What was the major occupation in the middle colonies

Farming, is the right answer.

Explanation:

Those British colonies of America, located between the Southern and the New England colonies were known as the Middle Colonies. The geographical conditions of the Middle colonies was comprised of rivers, plains, rich soil,  hills, bays, and a medium climate. These environmental conditions made people to own farms and practice farming.

a king decides to declare war on a neighboring country without the input of any advisers