No brother. But, before we go on: As-Salam Alaikum. It is good to see you agin after so long.
But, no. I do not think you can prove any such thing as "Arab imperialism" anywhere in the world, much less Africa. (True, Muslim controlled Spain fro centuries as w ay to bring Europe out of the Dark Ages. But, I would not call that "Arab Imperialism".) Brother, you must bring yourself to undersatnd one crucial fact: what we know as imperialism and as slavery in the west is unique in history. Only westen Europeans are gulity of this. That, as I see it, is very good news to Africans because it means that we have potential friends throughout most of the remaining world.
Let me try to explain. Take China, for instance. That is 25% of the worldd' population. But, China has never enslaved Africans and has never had any "imperialism" in Africa. Therefore, as I see it, China is much preferable in Africa than say, UK which did enslave Africans and did colonize Africa. Add India to the mix and you have over half of the world's population. These are potential friends to Africans.
Likewise, the Arabs have NEVER had any "imperialism" in Africa. True, they did have African slaves along with Arab slaves and a lot, a huge percantage, of Asian slaves. This is why we do not see many descendants of African slaves in Arabia: the slaves were mostly Asians who assimilated into Arab society rather easily. Many, if not most, of the African slaves involved were imported from Europe by way of Greek and Roman domination of North Africa. See my point? So, Arabs are natural allies and friends of Africans for this reason alone. It is simply absolutely wrong to try to focaus on an alleged Arab oppression of Africans by Arabs. That is not true.
What interests me about those who claim that Arabs are our enemies is the same people almost never deal with the simple fact that Europeans enslaved the vast majority of Africans. So, attention is diverted away from the true enemy in order to chase after hearsay, chase after a mirage, "Arab imperialism". No.
It is not my responsibility to prove what is established fact. I mentioned the account of the Oromo in Ethiopia, an account which even the Ethiopian government and the United Nations have recognized. Not a matter of hearsay.
Furthermore, I have not asserted or made any reference to "enemies" so please don't take my post out of context. I am speaking/writing from a historical perspective, not religious or ideological. And if you actually read my post I did mention the Portuguese and Dutch intrusion into East Africa but there is so much evidence concerning the Arab and Persian involvement in the East African slave trade its foolish to attempt refutation.
In fact, have you read any books such as "White Slaves, African Masters"?
Africans held many whites in captivity prior to 1492.