i did reacerch on nigerans and i live in europe, you provided only a source (europol) and your source just said that part of the drugs pass through african ports and that nigerians are sometimes involved ... there are tons of sources that state 80% of cocaine is imported by italian mafia, hashish by moroccans and italian mafia, heroin by albanians and turks.weed is mostly produced in europe and meth in the netherlands, what's left to nigerians are only a little piece
as i said yo don't know enough of europe to talk about it