I'm Sicilian and I majored in linguistics in college so this is a topic I could talk about all day. :) I appreciate your sincere interest in our language but you should know that you simplified a lot of it! I'm also not sure what you mean by "African major regions."

Sicilian actually predates Italian and Italian contains Sicilian influences (in a roundabout way), not vice versa. The vernacular poetry of the "Scuola Siciliana" was seen as radical for its time because it was written in the Sicilian language rather than Latin which was considered the language learned people wrote in. This inspired Dante Alighieri--known as the father of the Italian language--to write in his own local tongue, Tuscan, which would then became the major basis of today's standard Italian. So, thanks to Sicily for today's standard Italian! :P

Beyond that, Sicilian is a fascinating language whose ancient origins date back to the three indigenous peoples who inhabited the island, the Sicani from Iberia, the Siculi from mainland Italy, and the Elymi from Libya.

Then, waves and waves of invaders all left their mark on the local language(s) of Sicily and Sicilian itself actually contains many dialects. Thanks to the number of people who have all conquered Sicily, Sicilian has linguistic influences from the language of the Phoenicians, Carthaginians, Greeks, Romans, and Arabs as well as from Catalan, French, Spanish, German, and Provençal, among others. It is truly a Mediterranean melting pot language.