Personality tests are one of the most accurate ways to let you know exactly who you are.
a. true
b. false

there is an explationation of this on a site called crash   course world history 1

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.