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Rub al Khali
Also known as the empty quarter. One of the world’s largest sandy deserts covers about 250,000 square miles (647,497 square km). Located on the Arabian peninsula.
Glossary
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Runoff
Rainfall is not absorbed by the soil, carrying pesticides and fertilizers from fields into rivers, endangering the food chain.
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Russia
Location: Europe / Asia Official name: Russian Federation Formation (date of independence / date current borders were established): 1480 / 1991 Capital city: Moscow Population: 140 million / 21 people per sq mile (8 people per sq km) Total land area: 6,592,735 square miles (17,075,200 square km) Language(s) spoken: Russian (official language), Tatar, Ukrainian, Chavash, …
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Russian revolution
The revolt of 1917, in which the Russian communist party, led by V. I. Lenin, took control of the government from the czars.
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Russification
The effort, particularly under the Soviets, to implant Russian culture in non-Russian regions of the former Soviet Union and its Eastern European neighbors.