The Mexican society wasn't united, since they were constantly fighting with each other. Since soldiers were killed, they also lost military power. When the Spanish arrived, they had a strong military, but also diseases, which killed Mexican soldiers. That made the home society vulnerable.
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-Enforce laws
-Appoints head of agencies and Federal comissions
-Holds power to veto bills
-Promote diplomacy, sign peace treaties, and sign pardons
-Holds power to declare war
Answer:
You will find that the correct answer is Chester Nimitz.