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In 1821，Mexico was independence from Spain.And New Mexico was into the Mexico Republic The change had effect on New Mexico.The new government stop Spanish policies and encourage to trade with foreigners and the protectionist policy.Santa Fe became a busy trade center.
On 1837,governor Perez replaced many local officials, and instituted plans for new taxes.And in January 1838,"the short

lived Revolt of 1837 came to a bloody end".

When American organized a new government in ancient Spain, on

January 19, 1847, several officer were killed."The revolt of 1847"  had began in northern New Mexico.