A Jesuit reduction was a type of settlement for indigenous people in South America created by the Jesuit Order during the 17th and 18th centuries. The strategy of the Spanish Empire was to gather native populations into centers called "Indian reductions" (reducciones de indios), in order to Christianize, tax, and govern them more efficiently. The Jesuit interpretation of this strategy was implemented primarily in an area that corresponds to modern-day Paraguay amongst the Tupi-Guarani peoples. Later reductions were extended into areas now part of Argentina, Brazil, and Bolivia.