Did mexican-Americans fight in the American Revolution?

Answer 1

I guess you mean during their independence war. No, they fought their war on their own, without outside interference.

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In the early days of the Mexican Revolution (ca1910-ca1930), some foreigners came in from Los Angeles to help the Flores Maglón brothers and their Partido Liberal Mexicano. There were European and U.S. financial backers to the Conservative groups. Mostly, though, the Mexican Revolution was a civil war.

Answer 2

There were no Mexican Americans during the American Revolution. Mexico had not yet won its independence from Spain, and was physically separated from the 13 colonies by land and water. Spain and (Spanish) Cuba aided the American revolutionaries. Cubans and Spanish Americans made significant contributions.