The Sugar Act reduced the rate of tax on molasses from six pence to three pence per gallon, while Grenville took measures that the duty be strictly enforced. The act also listed more foreign goods to be taxed including sugar, certain wines, coffee, pimiento, cambric and printed calico, and further, regulated the export of lumber and iron. The enforced tax on molasses caused the almost immediate decline in the rum industry in the colonies. The combined effect of the new duties was to sharply reduce the trade with Madeira, the Azores, the Canary Islands, and the French West Indies (Guadelupe, Martinique and Santo Domingo (now Haiti)), all important destination ports for lumber, flour, cheese, and assorted farm products. The situation disrupted the colonial economy by reducing the markets to which the colonies could sell, and the amount of currency available to them for the purchase of British manufactured goods.