The answer is "social contract theory".
It is the willful understanding among people by which, as per any of different speculations, as of Hobbes, Locke, or Rousseau, sorted out society is carried into being and contributed with the privilege to anchor shared security and welfare or to direct the relations among its individuals.
My oppinon I think its C.I might be wrong but that might make the most since.
I believe the power was separated so that no one group of people had to much power. It is the basic gest of why we separate a lot of things so that everyone has equality and all power is not going to one person or group who does things in favor of another person or group. The power was then distributed so each branch could help keep the other branch from becoming power hungry and unsociable power feigns.
In the seventeenth century the dominant European presence in the Southeast Asia shifted from conquest to settlement, after several insurrections that arose in the Asian islands, but that were flatly suppressed, Spanish sovereignty was definitively established throughout the region. With the entry of the House of Bourbon in the reign of Spain, the reforms made by Philip V to the country and the colonies was imposed without problems to the Captaincy General of the Philippines. During this century, expeditions of vital importance to the Pacific were made.
