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