The document discusses three important dates in Mexican history: September 13 honors young cadets who died defending Chapultepec Castle during the Mexican-American War; September 16 celebrates Mexico's independence from Spain; November 20 commemorates the start of the Mexican Revolution against dictator Porfirio Diaz.

1. Celebrating Mexican History

2. September 13 BoyheroesDuring 1846-1848 The young cadets died in the Mexican American War in the Castle of Chaputepec

3. September 16 Mexican Independence Day. It celebrates the independence of Mexico from Spain in the early 19th century.

4. November 20 Is the commemoration of the Mexican revolution when Mexico raise against Porfirio Diaz