I'll say the same thing that I said to a similar comment...
Arabs barely documented their doings because Slavery was so entrenched in their culture. It's not even an "exact" estimate on the amounts taken. But if you think Arabs didn't enslave Somalis after Somalis converted to Islam just because they became Muslim then you'd need to explain how and why Arab until this day are using and abusing and exploiting Somalis, forcing them into manual labor,
This is from 2016
http://www.hiiraan.com/news4/2016/Jan/103860/despite_abuses_saudi_arabia_aims_to_recruit_15000_somali_maids.aspx
The first picture is from the book Trafficking in Persons Report (10th Ed.)
This article also talks about it
http://www.reuters.com/article/us-yemen-somalis-prostitution-idUSTRE61950M20100210
Arabs treat Somalis horribly, today and much of it goes unnoticed by the rest of the Muslim world because the "ummah" doesn't truly care about Black Muslims. That's why no one talks about all the tragedies that are happening in Somalia, everyone just talks about Syria and Palestine and don't get me wrong, we can talk about those issues, but why leave out Black Muslim issues? That happens all the time, there's so much going on in Somalia and Somalis are treated horribly by Arabs, getting called "abeed" yet it all goes relatively unnoticed.
Somalis are being used today, when Somalis are fully Muslim, what makes you think they weren't using Somalis when the Arab Slave Trade in East Africa first started...Again, Arabs referred to Somalis by using the term "Habesha", that's why not a single piece of Islamic/Arabic text has the word "Somali" I posted a picture that talks about how East Africans were referred to as "Habesha" and that location was referred to as the Land of Barbar or Berber.
In the book Slavery and manumission: British Policy in the Red Sea and the Persian Gulf by Jerzy Zdanowski, he says "Berbera" because that was one of the terms it was called.
Another thing that is explained in the book "Red Sea from Byzantium to Caliphate" is the fact that Arabs never said "Somali" or "Somalia"
"Frankincense is also known to have been grown in Somalia from early times, though does not feature prominently in the Arabic narrative sources. Agapius (d. 941-2), for instance, perhaps hints at the production of frankincense when he writes of Ethiopia's 'aromatic plants' ('aqaqir). 238 Similarly, al-Istakhri states that the Ethiopians "live scattered on the coastal region opposite Aden. All frankincense (bakhur)... comes from their country." 239 The Arabic kail al-bakhur does indeed translate as 'all the frankincense,' yet this may be a copyist's error for kail bakhur meaning 'every (type) of frankincense.' This could even be translated more loosely as 'every (type) of incense,' which might make more sense given the references to opercula, ambergris and frankincense produced in Ethiopia."
Frankincense is known for being in Somalia however, Arabs never said Somalia, they said Ethiopia because Somalia as a country did not exist, it was engulfed in term the "Land of Barbar"
Look at a map, if you look at the physical boundaries of what they decided to give Somalia, Somalis spill outside of those physical boundaries and are pretty spread out throughout East Africa (Djibouti, Kenya, Ethiopia, etc).
Here's a pdf online copy of the book the
Red Sea
And as far as it being illegal to sale Somalis, that was in the 1800s because Brits wanted to stop Arabs for going to East Africa to take slaves, which they continued to do so anyways, but here's the full page of what Canuck posted (She posted a foot note which didn't explain the context of it.) If you read the whole page, and not just the foot note, it implies Arabs were still taking Somalis because they had to ban Arabs from doing so.
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