11. The Gran Chaco had been a disputed territory since 1810. 12. "' Filadelfia "'is the capital of Boquer�n Department in the Gran Chaco of western Paraguay. 13. His award of the disputed Gran Chaco region to Paraguay made him a national hero. 14. The autonomous region of Gran Chaco is from where most of the gas is exploited. 15. The Indigenous peoples of the Gran Chaco maintain their cultures, particularly in the northern Chaco. 16. Fruits and roots are edible and well known to the native nations of the Gran Chaco . 17. From there he undertook several expeditions in the Gran Chaco , which led him into southeast Bolivia. 18. He then returned to the army, and he was deployed on border expeditions exploring the Gran Chaco . 19. The micro region around Morteros is an ecotone between the Humid Pampa semi arid Gran Chaco region. 20. The "'Margarita gas field "'is a natural gas field located in the Gran Chaco Province of Bolivia.
