 The Laws of Burgos were revised by the New Laws of 1542 issued by Carlos I and quickly revised again in 1552, after the laws met resistance from colonists.These were followed by the Ordinances Concerning Discoveries in 1573, which forbade any unauthorized operations against independent Native Americans.The Valladolid debate (1550–1551) was the first moral debate in European history to discuss the rights and treatment of a colonized people by colonizers.