Tucumán is the most densely populated, and the smallest by land area, of the provinces of Argentina. Located in the northwest of the country, the province has the capital of San Miguel de Tucumán, often shortened to Tucumán. Neighboring provinces are, clockwise from the north: Salta, Santiago del Estero and Catamarca. It is nicknamed El Jardín de la República (The Garden of the Republic), as it is a highly productive agricultural area.
By 1565 Diego de Villaroel founded San Miguel de Tucumán and the Provincia de Tucumán, Juríes y Diaguitas was organized. Because of frequent attacks by the indigenous peoples, the Malones, in 1685 San Miguel de Tucumán was moved by Miguel de Salas some 65 kilometres from its first location, where it was redeveloped. The regional aborigines of the region presented a strong resistance to the Spanish, who decided to move the defeated tribes toward Buenos Aires. The most noted of these relocations was the case of the Quilmes, who were moved to the city of Quilmes.
Tucumán was a midpoint for shipments of gold and silver from the Viceroyalty of Peru to Buenos Aires. It produced cattle, textiles, and wood products that provided supplies for the convoys on their way to Buenos Aires. Because of its important geographical position, and as head of the civil and Catholic governments it acquired special importance during the 18th century.
The creation of the Viceroyalty of the Río de la Plata in 1776 meant the end of the convoys from Perú to Buenos Aires. Tucumán, with 20,000 inhabitants by that time, suffered also from the British imports from the newly opened customs of Buenos Aires, no longer under the monopoly of the Spanish Crown.
In 1783 the Intendency of Tucumán was divided; Tucumán was set under the control of the Intendency of Salta del Tucumán, with its centre in Salta. José de San Martín arrived in Tucumán in 1813 and installed the Military School. In 1814 the Intendency of Salta was divided into the present provinces.
On July 9, 1816, at the Congress of Tucumán, the Provincias Unidas del Río de la Plata ("United Provinces of the Río de la Plata") declared their independence from Spain. Internal conflicts delayed the final fusion of the provinces into the República Argentina.
Following the failure of Argentina's first independence-era government, the Directorio, Governor Bernabé Aráoz on March 22, 1820, proclaimed the creation of the "Federal Republic of Tucumán." The experiment collapsed, however, when the neighboring provinces of Catamarca and Santiago del Estero withdrew the following year.
The beginning of the 20th century, with the customs restrictions and the arrival of the railway, brought prosperous economic times for the province and its sugarcane production. Numerous landmarks were built, such as Ninth of July Park and the Tucumán Government Palace, and a daily newspaper founded in 1912, La Gaceta, became the most circulated Argentine daily outside Buenos Aires; but, the sugar price crisis of the 1960s and President Juan Carlos Onganía's order to have eleven large state-owned sugar mills closed in 1966, hit Tucumán's economy hard, and ushered in an era of instability for the province.
In 1975, President Isabel Perón declared a state of emergency in the province. The decree led to Operation Independence, an official military campaign at least as brutal on local magistrates, lawmakers and faculty as it was on its stated target, the ERP. Violence did not fully abate until the appointment of General Antonio Domingo Bussi, the operation's commander, as governor at the behest of the dictatorship that deposed Perón in 1976. Efficient as well as ruthless, Bussi oversaw the completion of several stalled public works; but, also presided over some of the worst human rights abuses during that painful 1976-77 period. Retaining a sizable following, Bussi was elected governor in his own right in 1995, but lost much of his earlier popularity during his four-year tenure.
Life in Tucumán has since returned to a certain normality. Its economy has recovered strongly during the expansive period Argentina has had in the decade since 2002. José Alperovich, elected governor in 2003, has presided over record investment in public works while reaping criticism for attempts to eliminate term limits for his office.