Question

What was PRI and what was the main function of PRI in mexico

Answer 1

The PRI, Mexico's "official" party, was the country's preeminent political organization from 1929 until the early 1990s. In terms of power, it was second only to the president, who also serves as the party's effective chief. Until the early 1980s, the PRI's position in the Mexican political system was hegemonic, with opposition parties posing little or no threat to its power base or its near monopoly of public office. This situation changed during the mid-1980s, as opposition parties of the left and right began to seriously challenge PRI candidates for local, state, and national-level offices.

The PRI was founded by Calles in 1929 as the National Revolutionary Party (Partido Nacional Revolucionario--PNR), a loose confederation of local political bosses and military strongmen grouped together with labor unions, peasant organizations, and regional political parties. In its early years, it served primarily as a means of organizing and containing the political competition among the leaders of the various revolutionary factions. Calles, operating through the party organization, was able to undermine much of the strength of peasant and labor organizations that affiliated with the party and to weaken the regional military commanders who had operated

Answer 2

Institutional Revolutionary Party
The Institutional Revolutionary Party is a Mexican political party founded in 1929 that held power uninterruptedly in the country for 71 years from 1929 to 2000, first as the National Revolutionary .

Two have a predominant  role in Mexican politics: the Partido Revolucionario Institucional (Institutional Revolutionary Party, PRI) and the Partido de Acción Nacional (National Action Party, PAN).

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