Assertion: trading diaspora | /r/HasProperty | the hausa
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Source sentences:
text: And here may be distinguished five types based on the primary reason of dispersal: the trading diasporas (the Hausa and Doula in western Africa); the slave diasporas (West Africans in North Africa and East Africans on the Indian Ocean islands); the conquest diasporas (the Nguni in southern Africa); the refugee diasporas (e.g., from the Yoruba wars of the early nineteenth century); and the pastoral diasporas (the Fulani and Somali in the Sahelian zones of western and eastern Africa).