Given a text, write a compressed version of it in a single sentence.

Flour tortillas and burritos are found in northern Mexico and the Southwest, but are not known in other parts of Mexico. Since at least the 1920s, Chicanos from Texas have been making what came to be called burritos.
Tortillas & burritos are found in Northern Mexico & southwest & also known in parts of Mexico. Since 1920, Chicanos from Texas have been making which is burritos.