Who was the popular reformist president of Mexico who governed between 1934 and 1940? AP World History Chapter 29 Who was the popular reformist president of Mexico who governed between 1934 and 1940? a. Diego Rivera b. Eligio Martinez c. Pancho Villa d. Porfirio Diaz e. Lazaro Cardenas Answer: E Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+