During the 1820s and 1830s, the most significant economic activity that employed many individuals, including those living in Texas, was agriculture, particularly cotton farming. The fertile lands of Texas were conducive to growing cotton, which became the dominant cash crop in the region.
Additionally, other agricultural activities such as cattle ranching also played a crucial role in the economy of Texas during this time. The cattle industry was essential for both local consumption and trade, with cattle drives becoming a major economic activity as demand for beef grew.
In summary, the primary economic activity during the 1820s and 1830s for those living in Texas was agriculture, especially cotton farming and cattle ranching.