Populism emerged in Latin America under Juan Peron in Argentina in the 1940s. Peron advocated for the interests of workers, women, and ethnic minorities against the elite. As a military officer, he convinced the government to improve conditions for labor unions. His wife Eva Peron was also influential in advocating for women's suffrage, education, wages, and healthcare. However, Peron's popularity declined in the 1950s as the economy slowed and he became more repressive, leading to a military coup removing him from power in 1955.