Final answer:
Juan Perón was popular for his economic policies, support for labor unions, and charismatic leadership. His military background helped him rise to power but is not directly cited as a reason for his immense popularity.
Step-by-step explanation:
The question pertains to the popularity of Juan Perón, who was President of Argentina. Perón was immensely popular for several reasons: his economic policies during a postwar boom allowed him to improve wages and living conditions; his support for labor unions made him well-liked among the working class; and his charismatic leadership enabled him to connect with many Argentinians effectively. However, Perón's military background, despite playing a role in his rise to power, is not directly cited as one of the reasons for his immense popularity among the general populace. It was the combination of economic, social, and political strategies that won him widespread support.