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In page Great Zimbabwe:

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The construction of Great Zimbabwe is also claimed by the Lemba, as documented by William Bolts in 1777 (to the Austrian Habsburg authorities), and by an A.A. Anderson (writing about his travels north of the Limpopo River in the 19th century).[citation needed] Lemba speak the Bantu languages spoken by their geographic neighbours, but they have some religious practices and beliefs similar to those in Judaism and Islam, which they claim were transmitted by oral tradition.[1]