The harajuku district is one of the trendiest neighborhoods in what city?.

Tokyo

Explanation:

Harajuku is the trendiest neighborhood in Tokyo.

Tokyo

Explanation:

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.