Final answer:
The mariachi became popular among the disenfranchised masses because it reflected their culture, identity, and struggles. It provided a voice for the oppressed and served as a form of expression and protest.
Step-by-step explanation:
The mariachi is a style of music and musical ensemble that originated in Mexico. It developed in the 19th century as a form of traditional folk music, primarily in the state of Jalisco. Mariachi music became popular among the disenfranchised masses in Mexico because it reflected their culture, identity, and struggles. The mariachi songs often spoke about social issues, revolution, and the realities of everyday life. It provided a voice for the oppressed and served as a form of expression and protest.