Antonio de Espejo's expedition finds the Rio…
1583 CE
Antonio de Espejo's expedition finds the Rio Grande Valley well populated all the way up to the present site of El Paso, Texas, in 1582-83.
Leaving the Jumano behind, he passes through the lands of the Caguates or Suma, who speak the same language as the Jumanos, and the Tanpachoas or Mansos.
The expedition travels fifteen days upstream from El Paso without seeing any people.