1. How would you compare the Second World War to the recent fighting in the Middle East (starting with the Iraq War)? Both in terms of support and commitment on the part of the American public? How can feelings of nationalism play a significant role in the outcome of a war?

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.