If all light waves are reflected off a medium, then what color will be perceived?
White
O Black
Brown
Clear
DOLL

White

Explanation:

White is the perception of the combination of all colours of light

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.

could you show the options for the answers? : )