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| | History Channel Search Results (Site not responding. Last check: ) |
 | | With a hot, arid climate, and composed mostly of rocky and sandy soils, the region is not suitable for sedentary agriculture, but some sheep, goats, and camels are raised by nomadic herders. |
 | | The territory has rich deposits of phosphates, notably at Bu Craa; exploitation of the deposits began in the early 1970s. |
 | | Portuguese navigators visited the area near modern el-Aaiún in 1434 but did not establish lasting settlements. |
| historychannel.com /encyclopedia/article.jsp?link=FWNE.fw..we033500.a (555 words) |
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