The man who had been in charge of the Mexican government since 1876 at the time of the Mexican Revolution was AP World History Chapter 29 The man who had been in charge of the Mexican government since 1876 at the time of the Mexican Revolution was a. Francisco Madero. b. Augustin Iturbide. c. Benito Juarez. d. Lazaro Cardenas. e. Porfirio Diaz. Answer: E Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+