California, Sonora, Chihuahua, Coahuila, and Tamaulipas, but also on both coasts as well as the Isthmus of Tehuantepec. The situation of landless Mexicans became increasingly worse, so that by the end of the Porfiriato, virtually all (95%) of villages lost their lands. In Morelos, the expansion of sugar plantations triggered peasant protests against the Díaz regime and were a major factor in the outbreak and outcomes of the Mexican Revolution. There was resistance in Michoacán. Land loss accelerated for small holders during the Porfiriato as well as indigenous communities. Small holders were further disadvantaged in that they could not get bank loans for their enterprises since the amounts were not worth the expense to the bank of assessing the property. Molina Enríquez's work published just prior to the outbreak of the Mexican Revolution had a tremendous impact on the legal framework on land tenure that was codified in Article 27 of the Mexican Constitution of 1917. Peasant mobilization during the Revolution brought about state-directed land reform, but the intellectual and legal framework for how it was accomplished is extremely important. Calls for land reform In 1906, the Liberal Party of Mexico wrote a program of specific demands, many of which were incorporated into the Constitution of 1917. Leftist Ricardo Flores Magón was president of the PLM and his brother Enrique Flores Magón was treasurer. Two demands that were adopted were (Point 34) that landowners needed to make their land productive or risk confiscation by the state. (Point 35) demands that "The Government will grant land to anyone who solicits it, without any conditions other than that the land be used for agricultural production and not be sold. The maximum amount of land that the Government may allot to one person will be fixed." A key influence on agrarian land reform in revolutionary Mexico was of Andrés Molina Enríquez, who is considered the intellectual father of Article 27 of the 1917 Constitution. His 1909 book, Los Grandes Problemas Nacionales (The Great National Problems) laid out his analysis of Mexico's unequal land tenure system and his vision of land reform. On his mother's side Molina Enríquez had come from a prominent, politically well-connected, land-owning family, but his father's side was from a far more modest background and he himself had modest circumstances. For nine years in the late 19th century, Molina Enríquez was a notary in Mexico State, where he observed first-hand