Isn't that interesting...according to encyclopedia.com, "the evolution of African clothing is difficult to trace because of the lack of historical evidence. Although artifacts from Egyptian culture date back to before 3000 b.c.e., no similar evidence is available for the majority of the African continent until the mid-twentieth century." Humans, who supposedly have been around for much more than 6,000 years according to evolutionists, did not "need," I suppose the term might be used by evolutionists, to have written history about themselves. And of course, gorillas have supposedly maybe never had the "need" to have observations and their history notated in writing, therefore I guess according to evolutionists, simply did not "evolve" to develop writing and preservation of documents.
So how does this relate to evolution? Sounds cultural to me as you explain it. Oh i see, its just your way of dissing what you don't want to accept. Ok,