What event caused Texians to prepare for battle
and why?

Texas Revolution, also called War of Texas Independence, war fought from October 1835 to April 1836 between Mexico and Texas colonists that resulted in Texas’s independence from Mexico and the founding of the Republic of Texas (1836–45). Although the Texas Revolution was bookended by the Battles of Gonzales and San Jacinto, armed conflict and political turmoil that pitted Texians (Anglo-American settlers of the Mexican state of Coahuila and Texas) and Tejanos (Texans of mixed Mexican and Indian descent) against the forces of the Mexican government had occurred intermittently since at least 1826.

Explanation:

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The first two planes were flown into the towers of the World Trade Center in New York City

Explanation:Two of the planes were flown into the twin towers of the World Trade Center in New York City, a third plane hit the Pentagon just outside Washington, D.C., and the fourth plane crashed in a field in Pennsylvania.

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