Justo José de Urquiza was an Argentine politician and military leader born on October 18, 1800. He played a significant role in the early years of Argentina's nationhood, serving as the governor of the province of Entre Ríos. Urquiza was a key figure in the struggle for federalism in Argentina, advocating for a more centralized government to unify the country. In 1852, Urquiza became the first president of Argentina after the defeat of Juan Manuel de Rosas, a powerful federalist leader. His presidency focused on establishing a new constitution and promoting economic development. Urquiza's leadership helped shape the political landscape of Argentina during the 19th century.