What did the Spanish create in North America to protect their colonies from other Europeans?

The Spanish created a system of presidios, missions and pueblos in North America to protect their colonies from other Europeans. Presidios were military forts, missions were religious outposts, and pueblos were civilian settlements. This system of defense helped the Spanish to maintain control of their colonies in North America for over 300 years.

How many events happened in 1776?

What is the explanation of how Pennsylvania got its name?

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The day NASA was sued for the words of astronauts while orbiting the Moon
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