By 1830, American settlers in Texas had displeased Mexican authorities by A) refusing to free their slaves.

B) insisting on converting to Catholicisim.

C) allowing Mexico to tax the crops they sold.

D) agreeing to let Mexico control their local governments.

The Mexican authorities displeased the American settlers in Texas by  refusing to free their slaves.

The American settlers in Texas were angered over some Mexican actions such as banning of further american settlement and the importation of slaves.

Some of the Americans in Texas objected the existence of slavery therein because there were no balance of power between slave and free states.

Therefore, the correct option is A because the american settlers in Texas had displeased the Mexican authorities by refusing to free their slaves which they objected against.

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d. the right to establish a one-house legislature

formulating the initial idea for the policy

answer is c.