niger, pronounced neegar or n*gger was a pejorative for the real jews in ancient times and in modern day. The jews were called n*gers when they escaped to Africa. The place where they were the most heavily concentrated was named after them, by the europeans who enslaved them. The word Nigeria and Niger denotes the locations in Africa which were the most heavily concentrated with Jews who had migrated from East Africa, originally from Jerusalem/Judea/Judah.
Some Igbos say they are descended from Jews so your theory has some actual backing breh

Don't know how true it is but it'll get a dap and +rep from me
