The term 'EVA OR JUAN OF ARGENTINA' refers to Eva Perón and Juan Perón, two of the most influential figures in Argentina's history. Eva Perón was the wife of President Juan Perón and a powerful political figure in her own right. She was known for her advocacy of women's rights and her charitable works. Juan Perón was a three-time president of Argentina who is credited with modernizing the country's economy and improving the lives of its citizens. The crossword solution for this term is PERON, which is the surname of both Eva and Juan.