Ƙoƙarin ƙirƙirar wata al'umma mai zaman kanta ta Kirista ta Indiya an yi shi ne ta hanyar mishan na Jesuit da mazauna a wannan ɓangaren Kudancin Amirka a karni na sha takwas, wanda ya haɗa da sassan Uruguay, Argentina, da Brazil. Sun ci gaba da raguwa na Jesuit don kawo yawan mutanen Guarani tare a mishan na Mutanen Espanya da kuma kare su daga bautar da ke faruwa ta Mutanen Espanya da kuma 'yan bautar Portuguese, Bandeirantes. Baya ga neman tuba zuwa Kristanci. Katolika a Paraguay ya rinjayi' yan asalin ƙasar; addinin syncretic ya shawo kan abubuwa na asali. Reducciones ya bunƙasa a gabashin Paraguay na kimanin shekaru 150, har sai da fitar da Jesuits da Spanish Crown a 1767.
150 da kuma