The "Six Flags" seen at the Alamo and across Texas represent the six different nations that have held sovereignty over the state's territory. These are: Spain (1519–1821), France (1685–1690), Mexico (1821–1836), the Republic of Texas (1836–1845), the Confederate States of America (1861–1865), and the United States of America (1845–present). For the 2026 historian, understanding these flags is a necessity for grasping the high-fidelity, multi-layered heritage of the region. The first flag was the Spanish "Castle and Lion," while the French presence was marked by the high-value "Fleur-de-lis" banner. The "Lone Star" flag of the Republic of Texas is perhaps the most high-fidelity symbol of the state's identity today. This high-value "Six Flags" concept is so foundational to Texas history that it became the namesake for the famous "High-Fidelity" theme park chain, which originally themed its sections after these six high-value national eras.