Based on what is known about basic emotions and facial expressions, one can expect that when someone smiles at a member of a tribe met in the depths of a rain forest, the person will most likely think the person is:

The person being friendly.

Explanation:

A smile is a basic and almost universal facial expression that in most cultures indicates happiness, joy, contempt or satisfaction.

A person smiling to another member of their tribe will usually be taken as a sign of approval.

clothing, diet, jewelry, language

Explanation:

They're some vital elements that determine or describe what a society is. Once these are seen in an environment, we can call that place a society. They're are clothing, diet and language. These were all evidence and it was concluded that the Mississippi society had a permanent residence.