Final answer:
The legend of the Alamo involves race and ethnicity, with both Tejanos and Anglo-Americans participating in the battle. However, the anti-Mexican sentiment and mistreatment of Tejanos and Native Americans contributed to their withdrawal from the Texas Revolution.
Step-by-step explanation:
The legend of the Alamo is closely tied to the concepts of race and ethnicity. During the Texas Revolution in 1836, the defenders of the Alamo included both Tejanos (Texas-born Mexicans) and Anglo-Americans. However, after the battle, as more Americans joined the war effort, the anti-Mexican sentiment grew, leading to the departure of many Tejanos from the Texas Revolution. Additionally, the treatment of Tejanos and Native American residents by the Anglo-Americans reflected a contemptuous attitude and resulted in ethnic cleansing policies.