Which state chose not to attend the convention in philadelphia ? why?

Ineed answers 5 and 6 on my social studies homework reply to this question i posted

This map is depicting the 16th century route of what explorer

Why might the spanish government have approved of the encomienda system? a the system allowed for fair treatment of all under it, leading to a happy and prosperous colony. b the system used natives as slaves which meant the government was able to maximize their profit of exported goods. c the system allowed for mostly profitable trade within the different colonies. d the system was a great example of how to successfully run a colony, making spain a world power.