Tribes of Tanzanica are based on the tribes of Africa who were most impacted
by the exploration and conquest of the late 19th century. Some tribes were
huge and well organized, some were tiny and are now completely lost to history.
They were all part of a delicate balance of power and resources that was
destroyed by the European incursions. The Central Tribes list cuts across
a broad spectrum of historical tribes, but if you are representing a tribe
with extensive access to guns you might use the Arab list instead.