Final answer:
US citizens in Texas had various complaints against the Mexican government, including restrictions on land ownership, differences in the legal system, attempts to convert the settlers' religious beliefs, and the illegality of slavery in Mexico.
Step-by-step explanation:
US citizens in Texas had several complaints against the Mexican government. One of the complaints was that Mexico refused to allow the migrants from the US to own land outright. Another complaint was that the legal system in Texas was different from what they were accustomed to.
Additionally, there were tensions because Mexico was attempting to convert the Protestant migrants to Catholicism, which went against their religious beliefs. Lastly, slavery was illegal in Mexico, but many American settlers in Texas were slave owners and desired Texas to become a new U.S. slave state.