21. The floral characteristics of the Gran Chaco are varied given the large geographical span of the region. 22. These were the Jesuit Reductions in the Gran Chaco region in 1768 when the Jesuits were expelled. 23. As it spread during the Gran Chaco period, pasillo also absorbed the individual characteristics of isolated villages. 24. The first one in the Gran Chaco region ( West ), and the second one in Eastern Paraguay. 25. In 1966 and 1968 Clastres went into expeditions to Paraguayan groups of Chulupi people in the Gran Chaco region. 26. The low hills in the northwestern part of the Alto Chaco are the highest parts in the Gran Chaco . 27. "' Yacuiba "'is a city in southern Bolivia and the capital city of Gran Chaco Province in the Tarija Department. 28. In contrast with the hospitable Guaran? the Gran Chaco people, such as the Abip�n, Mocob? and Chiriguano resisted European colonization. 29. The "'Abipones "'(, singular ) were an indigenous peoples of Argentina's Gran Chaco , users of one of the Guaicuruan languages. 30. However, uniquely among night monkeys, populations of Azara's night monkey from the Gran Chaco are active both day and night.