Became a great center of learning when muslim invaders took over parts of north africa.
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Passing laws, creating courts, and collecting taxes are examples of

Figure out who is lying and telling the are 2 truth telers and 3 liarsperson a says person e is lyingperson b says person c is lyingperson c says person b id lyingperson d says person b is telling the truthperson e says person c is telling the truth

The two-factor theory of emotion was proposed by