Which of the following describes a major motivation for the congress of vienna

They wanted to make sure that there will not be another dictator like Napoleon.  They also wanted to maintain the system of government in Europe. They were also determined to prevent another overthrow of government.  They did not want another like this to happen again.

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.