Stephanie attends a state school in iowa. seeing a blond-haired, tanned guy walking around campus, she assumes that he must be from california, despite the fact that there are far more in-state students at the university. what best explains her assumption?

Confirmation bias

Explanation:

Confirmation bias is the tendency to interpret information in a way that confirms one's preexisting beliefs. This type of bias prevents people from looking objectively at given situations and paves way to many false beliefs and stereotypes.

Stefanie sees a blond-haired, tanned guy walking around campus and she assumes he must be from California based on the way he looks. She assumes that everybody looking that way must be from California because she heard that belief so many times that she started believing it, without any proven evidence supporting this statement.

the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.