The Santa Anna were angry at the Mexico supplying soldiers at the Alamo because who dominated Mexican history in the 1st half of the 19teen century to such an extent that historians often refer to it as the Age of Santa Anna, he was the man of destiny who loomed over his time like a melodramatic colossus, the uncrownded monarch. Santa Anna 1st opposed the movement for Mexican independence from Spain, but then fought it on support of it.