Which disadvantage hindered the Mexican army during the battle of San Jacinto

It was due to the lack of knowledge Mexicans had about the territory they entered in battle.

After the Mexican triumph in the Battle of El Alamo on March 6, 1836, the Texan powers had been compelled to react constantly, while the Mexican troops won new triumphs in the clash of Refugio (March 15, 1836) and another triumph a couple of days after the fact at the Battle of Coleto (March 20), and other Mexican triumphs at Encinal del Perdido and Goliad. Given this circumstance, General Antonio Lopez de Santa Anna considered the arrangement to enter the domain of Texas deserting an extensive piece of his powers under the direction of Generals Vicente Filisola and José de Urrea, in the feeling of smothering the Texan revolt it was crucial to decimate the last leftovers of the "Texan Army" driven by the American Sam Houston.

The armed force had started the oppression of the troops. Amid March and part of April, partitioned into a few segments, involved the imperative populaces. However, because of the gradualness with which the principal armed force walked, the General boss and the leader of Mexico, Antonio Lopez de Santa Anna, progressed with a troop of experienced officers planning to get General Houston, along these lines starting the fourteenth April, a race in the Mexicans, that did not know the participatory territory with inconvenience, took the most exceedingly awful part.