Final answer:
Stephen F. Austin was imprisoned for about two years after being arrested by Mexican authorities for inciting Texans to form their own government.
Step-by-step explanation:
Stephen F. Austin, a key figure in the Texan independence movement, was imprisoned for approximately two years. His incarceration occurred after he traveled to Mexico City in 1833 to present a petition from Texan settlers requesting self-government separate from the state of Coahuila y Texas
While in Mexico City, Austin wrote a letter encouraging the Texans to form their own state government, and this letter, when intercepted by Mexican authorities, led to his arrest. Austin was not formally charged but was held in prison until his release in 1835.