Mexico has had a complex political history since gaining independence from Spain in 1821. During this time, Mexico has experienced a mix of presidential and authoritarian rule, with periods of stability and unrest.
However, one person who ruled Mexico for a significant amount of time as a dictator was Porfirio Díaz, who ruled Mexico from 1876 to 1911. Díaz came to power through a military coup and ruled Mexico as a strongman for 35 years. During his rule, Díaz modernized Mexico's economy and infrastructure, but also maintained a strict authoritarian regime that suppressed political opposition and dissent.
Another long-serving Mexican President was Carlos Salinas de Gortari, who served as President from 1988 to 1994. Salinas implemented a number of significant reforms aimed at modernizing Mexico's economy and integrating it more closely with the global economy, but his presidency was also marked by allegations of corruption and human rights abuses.
Overall, while Mexico has had a number of Presidents and leaders over the past two centuries, Porfirio Díaz and Carlos Salinas de Gortari are among those who have held power for a significant period of time and have had a lasting impact on Mexico's political and economic development.