I got many matches on the Gedmatch website that are from the same heritage background (Irish/English/Dutch/German/Spanish/French). The total cM of shared DNA runs from 10 to 32 cM. The most common chromosome of all the matches and me is chromosome 15 and all the matches' connections' go back from 4 to 7 generations.
My question is that I am from Algeria. I have 13% Iberian (Spanish and Portuguese) DNA and 56% North African (Amazigh) and 20% Middle East and the Levant (Arab) and 9% African. I was wondering is these people who matched with me mean that I have a foreign 4’s grandfather or grandmother from those countries and how many years this common ancestry goes back. Or if these far away connections are normal in Algerian people?
I read that Amazigh Berber DNA have some Irish in them but is this the reason that I have those matches or does it have to be a closer relationship to have many matches like that? Note that the largest cM shared is 32 cM. I had another bigger one on Family Tree DNA at 46 cM. I also read about how the Barbary slave trade refers to the slave markets that were lucrative and vast on the Barbary Coast of North Africa, which included the Ottoman provinces of Algeria. At that time they took people from Ireland and Europe as slaves to North Africa between the 16th and the middle of the 18th century. After that the French occupation of Algeria started. So am really not sure where this blood line started, I would appreciate any help.