Alamo is such an important symbol in u. s history because

The battle of the Alamo is a long-recognized symbol of bravery in the face of unbeatable odds. Although the battle itself lasted only 90 minutes, it was the culmination of a 13-day siege by General Antonio López de Santa Anna's troops against the outnumbered inhabitants of the fort. It is the site where some of America's most revered legends, including Davy Crockett and Jim Bowie, died.