Plutarco Elías Calles was a prominent Mexican politician and military leader, born on September 25, 1877. He served as the President of Mexico from 1924 to 1928 and played a significant role in shaping the country's post-revolutionary policies. Calles is known for his efforts to modernize Mexico and promote economic development, as well as for his involvement in the Mexican Revolution. After his presidency, Calles continued to influence Mexican politics, founding the National Revolutionary Party (PNR) in 1929, which later evolved into the Institutional Revolutionary Party (PRI). His legacy is marked by both his contributions to state-building and the controversies surrounding his authoritarian governance.