| 31. | Sometime around 400 BCE, Celtic tribes crossed the Alps from Gaul and settled the Po river plain.
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| 32. | They distinguished themselves during Eastern Front being tasked to hold the front in the Don river plains.
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| 33. | Downriver in a river plain area known as Oderbruch, some 19, 000 residents were threatened with evacuation.
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| 34. | It starts in the Rocky Mountains and flows in a generally southeast direction into the Snake River Plain.
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| 35. | The early Harappan cultures were preceded by local Neolithic agricultural villages, from where the river plains were populated.
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| 36. | The unique dip of the Teton fault can be explained by the subsidence of the Snake River Plain.
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| 37. | Together these eruptions have helped create the eastern part of the Snake River Plain from a once-mountainous region.
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| 38. | The summit offers a sweeping view of the vast Snake River Plain to the east, south, and west.
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| 39. | Island Park Reservoir, a component of the Minidoka Project, is used for irrigation in the Snake River Plain.
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| 40. | Over thousands of millennia, the rich river plain with sandy channels, swamps and lush lowland forest dried up.
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