 whose program was frustrated by a conservative congress. In the 1920s, Marxist groups with strong popular support arose.
In 1970, Senator Salvador Allende Gossens, a Marxist physician and member of Chile's Socialist Party, who headed the "Popular Unity" (UP or "Unidad Popular") coalition of the Socialist, Communist, Radical, and Social-Democratic Parties, along with dissident Christian Democrats, the Popular Unitary Action Movement (MAPU), and the Independent Popular Action, won a plurality of votes in a three-way contest. The Chilean Congress conducted a runoff vote between the leading candidates, Allende and former president Jorge Alessandri and chose Allende by a vote of 153 to 35.
Allende's program included advancement of workers' interests; a thoroughgoing implementation of agrarian reform; the reorganization of the national economy into socialized, mixed, and private sectors; a foreign policy of "international solidarity" and national independence; and a new institutional order (the "people's state" or "poder popular"), including the institution of a unicameral congress. The Popular Unity platform also called for nationalization of foreign (U.S.) ownership of Chile's major copper mines.
An economic depression that began in 1967 peaked in 1970, exacerbated by capital flight, plummeting private investment, and withdrawal of bank deposits by those opposed to Allende's socialist program. Production fell and unemployment rose. Allende adopted measures including price freezes, wage increases, and tax reforms, which had the effect of increasing consumer spending and redistributing income downward. Joint public-private public works projects helped reduce unemployment. Much of the banking sector was nationalized. Many enterprises within the copper, coal, iron, nitrate, and steel industries were expropriated, nationalized, or subjected to state intervention. Industrial output increased sharply and unemployment fell during the Allende administration's first year.
Other reforms undertaken during the early Allende period included redistribution of millions of hectares of land to landless agricultural workers as part of the agrarian reform program, giving the armed forces an overdue pay increase, and providing free milk to children. The Indian Development Corporation and the Mapuche Vocational Institute were founded to address the needs of Chile's indigenous population.
The nationalization of U.S. and other foreign-owned companies led to increased tensions with the United States. The Nixon administration brought international financial pressure to bear in order to restrict economic credit to Chile. Simultaneously, the CIA funded opposition media, politicians, and organizations, helping to accelerate a campaign of domestic destabilization. By 1972, the economic progress of Allende's first year had been reversed and the economy was in crisis. Political polarization grew, and large mobilizations of both pro- and anti-government groups became frequent, often leading to clashes.