Provinces of Argentina Aires Province accepted the 1853 Constitution of Argentina in 1861, and its capital city was made a federal territory in 1880. A law from 1862 designated as national territories those under federal control but outside the frontiers of the provinces. In 1884 they served as bases for the establishment of the governorates of Misiones, Formosa, Chaco, La Pampa, Neuquén, Río Negro, Chubut, Santa Cruz and Tierra del Fuego. The agreement about a frontier dispute with Chile in 1900 created the National Territory of Los Andes; its lands were incorporated into Jujuy, Salta and Catamarca in 1943. La Pampa and Chaco
Catamarca Province low humidity and high solar radiation. Before the arrival of the Spanish conquest, most of today's Catamarca was inhabited by the Diaguitas indigenous people, including the fierce Calchaquí tribe. In 1558 Juan Pérez de Zurita founded "San Juan de la Ribera de Londres", but since it was constantly under attack by indigenous people its population remained small; it was re-founded several times at new sites with new names. The sixth foundation was by Fernando de Mendoza Mate de Luna on July 5, 1683, with the name "San Fernando del Valle de Catamarca". When the Viceroyalty of the Río de la