Why do the United States and Canada trade with each other so much rather than overseas trading partners ​

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.

answer; which categories of people are most at risk of becoming a criminals;