I never understood what this meant, because Ethiopia, Eritrea and Somalia were clearly colonized by Italy. Is that just denial?
Not during the height of the colonial period and the scramble for Africa, the battle of Adwa is a significant success that inspired future african independent thought and gave hope to many that Europeans colonizers could be defeated. And even when Ethiopia finally fell to the Italians 20 years later it was only for a 5 year period. Italy never colonized Ethiopia in the same way the rest of Africa at that time was.