What could allow a person to rise in social class in the aztec empire

People in the Aztec empire were allowed to rise in a social class once they've proven themselves to the gods that they were worthy of "ascending" a social class. This did not happen that commonly. It often involved people showing athletic or war prowess which was seen as a sign that people were favored by the gods.  

U.S. Constitution: 1789 ... The Amendments are changes to the Constitution. ... The Articles turned out to be a weak system of government and this needed to ... Georgia, Maryland, Massachusetts, New Hampshire, New York, New Jersey.

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