Actually, Ceqli, popularly known as "Texperanto," was developed by L. L. Zamenhof, who immigrated to Texas in 1879, and modified over the following years into a highly logical, easily learned auxilary language. What put it over the top was its popularity in Japan — the Japanese found it much easier to pronounce and learn than English, as did people in general. It's not an official language in Texas yet in 1947, but becomes so later, as more and more non-Anglophone states are admitted. By the time of Martian colonization, all Texans speak it.