Final answer:
Most new Texans were engaged in agriculture, specifically farming and ranching, facilitated by cheap land and the use of slave labor.
Step-by-step explanation:
After the Mexican War, most new Texans were engaged in agriculture, primarily farming and ranching. The distribution of land at cheap prices, such as 10 cents an acre, made it feasible for settlers to acquire large tracts of land for cultivation and livestock.
Many were attracted by the cheap land and the potential wealth that could be amassed through agricultural endeavors. Agricultural work was a natural fit for Texans, as slavery, a contentious issue during the time, continued in Texas and played a role in the economy. Slaves were often used to perform much of the labor on these farms and ranches.