31. In March 1931, he became the first white person to reach Lake Pitiantuta, the largest lake of the Gran Chaco region. 32. The species within this genus inhabit different regions of the Gran Chaco ecoregion including parts of northern Argentina, Bolivia, and Paraguay. 33. The Gran Chaco , which accounts for about 60 % of the territory, is home to less than 2 % of the population. 34. Woven ponchos, known for their beauty and quality, are made by the ethnic groups Maskoy, Nivacl? and Wich?from the Gran Chaco . 35. Since 2005 there exists an anarchist student movement in the southern region of the Gran Chaco , the " Autonom�a Frente Universitario ". 36. Over the next few decades, Bolivia began to push the natives out and settle in the Gran Chaco , while Paraguay ignored it. 37. In 1920 the Salesians arrived to Gran Chaco in Paraguay and to Assam in India as well as Central America and Cuba. 38. In 1888 Boggiani went to Asunci�n intending to trade in cattle and hides, then began his first expedition in the Gran Chaco . 39. He ordered the construction of a road in the swamps of the Gran Chaco along which the troops advanced to the northeast. 40. Switchgrass suitability for cultivation in the Gran Chaco is being studied by Argentina s Instituto Nacional de Tecnolog�a Agropecuaria ( INTA ).
