 While some made peace with the Paraguayans, in the northern Chaco the Mbayá bands contested Spanish authorities and Jesuits expanding out of Santa Cruz de la Sierra, Bolivia.The Santo Corazon mission, established in 1760, was the most easterly of the Bolivian missions and initially had a population of 2,287 Chiquitos people.The mission had the political objective of finding and securing a land route from Spanish settlements in Bolivia to those in Paraguay.