Question

Why were the Tejanos upset with the American settlers

Answer 1

Answer:

Because the siege and battle of the Alamo involved a considerable number of Mexican Texans, or Tejanos, as defenders, couriers, and noncombatants. ... Some Tejanos also participated in the events of the siege and final assault as loyalists—either as government officials or members of the Mexican military.

Explanation:

Settlers went into conflict with the Mexican government because they were planters who brought slaves. Mexico had abolished slavery before and refused this practice. Texas later became independent shortly and joined the USA in 1845.