What shows that American southwest was once part of Mexico and Spain?

The presence of Spanish and Mexican place names, language, food, history, and architecture in the American southwest provide strong evidence that the area was once part of Mexico and Spain.

Here are some specific examples:

Place names: Many cities, towns, and landmarks in the American Southwest have Spanish or Mexican names, reflecting their Spanish or Mexican heritage. Examples include:

* Los Angeles, California

* San Francisco, California

* Santa Fe, New Mexico

* Albuquerque, New Mexico

* El Paso, Texas

* Tucson, Arizona

Language: Spanish is widely spoken in the American Southwest, particularly in areas near the US-Mexico border. Many people in the region also speak English, reflecting the region's history of being part of both the United States and Mexico.

Food: Mexican food is popular in the American Southwest, and dishes like tacos, burritos, enchiladas, and tamales are common. This culinary influence reflects the region's historical ties to Mexico.

History: The American Southwest was first explored by Spanish explorers in the 16th century, and it was subsequently colonized by Spain and Mexico. The region remained part of Mexico until the mid-19th century, when it was acquired by the United States as a result of the Mexican-American War.

Architecture: The American Southwest is home to many examples of Spanish colonial architecture, which is characterized by its use of adobe bricks, red tiles, and decorative arches. This architectural style reflects the region's historical ties to Spain and Mexico.

In summary, the presence of Spanish and Mexican place names, language, food, history, and architecture in the American Southwest provide clear evidence that the area was once part of Mexico and Spain.