What is frontera mexicana?

Frontera Mexicana, also known as the Mexican Border, is the international boundary that separates Mexico and the United States. The border is 1,954 miles (3,145 km) long and spans four US states (California, Arizona, New Mexico, and Texas) and six Mexican states (Baja California, Sonora, Chihuahua, Coahuila, Nuevo Leon, and Tamaulipas). The border is marked by a series of physical barriers such as walls, fences, and rivers, as well as checkpoints and surveillance technologies. The region has a complex history of cultural exchange and migration, as people from both sides of the border have interacted and moved across it for centuries. However, the area is also known for high levels of drug trafficking, violence, and other security threats, making it a site of tension and controversy between the two countries.