Why did Allende nationalize Chile’s U.S.-owned copper mines?

President Salvador Allende nationalized Chile’s U.S.-owned copper mines as a central component of his government's transition toward socialism.12

The primary motivations for this policy included:

• Ending Foreign Domination: Allende’s Popular Unity coalition sought to end the control of Chile’s mining and finance sectors by foreign capital, which they viewed as essential for achieving national economic independence.2
• Economic Redistribution: By taking control of the country's main resource of economic production, the government aimed to generate revenue to support broader social programs, including agrarian reform and the redistribution of income to favor poorer classes.2
• Political Ideology: As an avowed Marxist, Allende viewed the state ownership of basic industries as a necessary step in restructuring Chilean society.12

This nationalization, which occurred in the early 1970s, was carried out under constitutional authority but significantly strained relations with the United States and weakened foreign investor confidence in the Chilean economy.13