Did you know that certain African tribes don't believe in natural death?

They come in different patterns, each pattern resembling certain tribe or clan.

I tell him about the habits of certain tribes, the deadly poisons they use.

These individuals were sometimes viewed in certain tribes as having two spirits occupying one body.

And certain tribes did practice domestic servitude that could be considered as slavery.

A similar relationship also exists with certain Kurdish tribes.

But there are questions about the degree to which certain tribes - especially those in the Sunni areas - honor their contracts.

He called on certain tribes to perform military service.

They are the sort used by certain primitive tribes in Guatemala.

Initiative can be anything from a stat to a certain tribe or an element.