Tim L. Merrill and Ramón Miró's "Mexico, A Country Study: The Calles Presidency, 1924–48, The Maximato, Cardenismo and the Revolution Rekindled and Institutional Revolutionary Party (PRI)"

Read these texts to understand the reasons why they Institutional Revolutionary Party became so influential in Mexican politics in the twentieth century.

Click http://countrystudies.us/mexico/32.htm link to open resource.