The correct answer is - <span>The pope required that the Spanish monarchs make the conversion of native peoples to Christianity a priority during colonization.
So it wasn't really their choice - they were forcefully made to change their religion from the tribal, Native American gods they believed in, into the religion of Jesus Christ - a religion that was so strange and foreign to them, because it was brought by outsiders.
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The Grand Canyon is like a history book because you can see all the layers of rock and dirt throughout the ages, and scientists can read those to tell what happened.
Hope this helped :)