Approximately how long was the settled area around the Rio Grande River controlled by the Spanish before New Mexico and Texas became part of the United States?

Question

Quizplus · Accepted Answer

The Spanish began colonizing the area around the Rio Grande in the late 16th century, and New Mexico and Texas became part of the United States in the mid-19th century, marking approximately 300 years of Spanish control.

Approximately How Long Was the Settled Area Around the Rio