Which leader caused argentinas economy to decline when he nationalized many private industries?

The leader who caused Argentina's economy to decline through the nationalization of many private industries was Juan Domingo Perón. His policies in the mid-20th century, particularly during his first presidency from 1946 to 1955, included extensive state intervention in the economy, which led to inefficiencies and a lack of competition. While initially popular and aimed at improving workers' rights, these measures ultimately contributed to economic instability and inflation. The long-term effects of his policies set the stage for future economic challenges in Argentina.