The "Enumeration" Principle in the Navigation Act of 1660 Required

The "enumeration" principle in the Navigation Act of 1660 required that

A) at least three-fourths of the total value of colonial products had to be shipped in English vessels.
B) certain commodities like sugar, tobacco, and indigo could not be shipped outside the British Empire.
C) European goods bound for the colonies had to pass through England on the way.
D) all colonial commodities had to be sold to British merchants.