Die Verbreitung arabischer Stämme in Arabien.

Tribes in Arabia must distribute evenly.

How do they differentiate ??

Is this modern day? If not, what year are we looking at here?

Where are Banu Tamim? They are absent from the Nejd? Did you make this yourself? Seems odd you forgot that group they are quite numerous from central arabia all the way to Qatar and up to Kuwait.