Somali clans predated colonial rule by centuries. [fact]
As our oldest sources show, the reality, on the contrary, is that the Somalis invented their own clan system long before, and entirely independently of colonial intervention. Many things can be blamed on those who colonized Somali territory, but not that. Of course, the foreign administrations were forced to take note of these indigenous divisions and even exploit them: this is what the different Somali groups demanded.
I.M. Lewis, I. M. Lewis, A Modern History of the Som…, loc. 7