How might one distinguish between butylamine and dibutylamine?

the answer to your question is false can’t remember who he rode with but he rode with sombody

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.