The correct answer to this open question is the following.
King Ferdinand of Spain and Bartolomé de las Casas used to impose the Encomienda system on the premise that conquered land belonged to the Spanish crown, under the service of God. King Ferdinand knew about the many raw materials and natural resources from the Americas and was urged to exploit those resources to the benefit of Spain. Bartolomé de las Casas owned many Encomiendas on the island of Cuba. So he was not only interested in evangelization and on the conversion of American Indians into Catholicism, he loved getting rich and that's what he did through the Encomienda system. The Encomienda system granted subjects to work and exploit the land and control the Indians who paid tribute to the Spanish monarchy. A very unjust system of exploitation.
Encomienda, in Spain's American and Philippine colonies, legal system by which the Spanish crown attempted to define the status of the indigenous population. It was based upon the practice of exacting tribute from Muslims and Jews during the Reconquista (“Reconquest”) of Muslim Spain
The idea and concept of Popular Sovereignty is the belief that the authority, legality and legitimacy of the government is created by the will or consent of its people.
