Julio Argentino Roca

During his two terms as president, many important changes occurred, particularly major infrastructure projects of railroads and port facilities; increased foreign investment, along with immigration from Europe and particular large-scale immigration from southern Europe; expansion of the agricultural and pastoral sectors of the economy; and laicizing legislation strengthening state power.
Roca's main foreign policy concern was to set border limits with Chile, which had never been determined with precision. In 1881 Argentina gained territory by treaty with Chile. Provided by Wikipedia