What type of investments are securities

In the investing sense, securities are broadly defined as financial instruments that hold value and can be traded between parties. In other words, it's a catch-all term for stocks, bonds, mutual funds, exchange-traded funds or other types of investments you can buy or sell.

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.

they could find out our specific needs.