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They used salt, gold, and other valuables to trade. They used the river to help them get to other places.

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The Niger River is 4,200 km long.

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The Niger River Delta is a source of water for trade across the Sahara.

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The Niger River was an important part of transportation and trading to get resources around. It is also one of the only water sources.

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People used big, swinging nets on the Niger River to get fish to eat and cook so that wouldn't be hungry.

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The Niger River was used for getting around (transportation).

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They traveled the river with boats to trade salt, gold, food, and animal skin.

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The Niger River Delta is a place where the river meets the sea and is really good for farming.

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The Niger River is Africa's third largest river.

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It affected the way people because it was hot and hard to live without much water.

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The Sahara Desert affected the way people lived long ago because it was so hot which made it hard to survive.

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3/4 of the Sahara Desert has no vegetation.

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Camels can drink up to 200 L of water in 15 minutes and it can last for about 4 weeks.

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Regs are flat areas of gravel, tiny stones, and sand.

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The 10% of the Sahara Desert is covered by sand.

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Sand hills, or sand dunes, can reach up to 1,000 feet high.

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The Niger River gave them water.