A charter is a document that gave colonies the legal rights to exist. A charter is a document, bestowing certain rights on a town, city, university or an institution. Colonial Charters were empowered when the king gave a grant of exclusive powers for the governance of land to proprietors or a settlement company. The charters defined the relationship of the colony to the mother country, free from involvement from the Crown. For the trading companies, charters vested the powers of government in the company in England. The officers would determine the administration, laws, and ordinances for the colony, but only as conforming to the laws of England. Proprietary charters gave governing authority to the proprietor, who determined the form of government, chose the officers, and made laws, subject to the advice and consent of the freemen. All colonial charters guaranteed to the colonists the vague rights and privileges of Englishmen, which would later cause trouble during the revolutionary era. In the second half of the seventeenth century, the Crown looked upon charters as obstacles to colonial control, substituting the royal province for corporations and proprietary governments.