In the meantime, other counties had been formed in Virginia. An area which had been settled originally in Upper Norfolk was named Nansemond County in 1642. "Nansemond" is an Indian word meaning "fishing point or angle." In 1648, the county of Northumberland was formed from a large Indian district formerly known as Chickacoan and it was named for Northumberland County, England. From this large area, one hundred sixteen counties were later formed. Within a twenty-five year period, seven additional counties were created: Gloucester County (formed from York and named for the third son of Charles I, Henry-Duke of Gloucester), New Kent County (formed also from York and believed to have been named either for the English Kent or for Kent Island), Lancaster County (from York and Northumberland), Surry (from James City County), Westmoreland (from Northumberland and later an addition from James City County), Stafford (from Westmoreland) and Middlesex (from Lancaster)--the latter five named in honor of English counties. The formation of many new counties during this time illustrates the great increase in population which took place. When Charles II became King of England in 1660, Britain's colonial policy changed. Previously, the colonies had been more or less neglected, and interest in England had been chiefly centered upon religion, intellectual achievement and local issues. After the Civil War in England, the importance of the colonies seemed more apparent, competition in setting up and controlling colonial empires was greater and mercantilism became the key theory accepted by the leading countries of Europe. Mercantilism was based upon the idea that the colonies existed for the benefit of the mother country and that they had specific obligations or responsibilities to fulfill, namely: (1) to produce the articles which the mother country needs and which are impossible for the mother country to produce; (2) to supply the mother country with foodstuffs which she needs, (3) to furnish a market for the mother country's manufactured goods, and (4) to export colonial goods in mother country ships only. Earlier in 1651, Parliament had passed a law prohibiting foreign vessels from trading with the American colonists. This law had been aimed primarily at the Dutch. It also stated that all products sent by the American colonies to England or sent from one colony to another had to be carried in either English or American ships. However, there had not been strict enforcement of this law in Virginia.