Question

What factors might account for the per capita incomes of Colorado, Delaware, Maryland, Massachusetts, New Jersey, and New York of the United States and Yukon Territory, Ontario, and Northwest Territories of Canada?

My answer: The factors which may account for the per capita incomes are their individual nation's economic activities, such as hunting, fishing, forestry, livestock raising, and commercial farming.

Answer 1

If the answer is the nations' economic activities, then why were only a few parts of these two countries mentioned?

Answer 2

Oh,I meant to write, "The factors which may account for the per capita incomes are their individual state and province or territory's economic activities, such as hunting, fishing, forestry, livestock raising, and commercial farming."

Answer 3

Right.