Well some can be the types of food they eat
The Islam emerged in the sixth century AD, and with it, the first Islamic states started to occur. The Islamic states started to occur because this religion managed to unite lot of tribes and create one powerful entity. The military strength was big, so it was used for expansion, and on the territories that were conquered, the people were converted to Islam, very often forcefully. This has resulted in rapid change of the political and religious map of the world, with a very large area becoming dominated by Islam. The Islamic states, once properly established, flourished and were very advanced, having big achievements in numerous scientific fields. Unfortunately, the fundamentalist fraction managed to prevail over time and stopped the progress, so gradually the Islamic states started to fall behind the other parts of the world when it came to development, and that can be seen even nowadays.
Benefits of the System,There are a number of benefits of using the System: (1) it reduces the cost and administrative workload associated with the issuance and custody of beneficial certificates; (2) it executes administrative procedures promptly─for example, it used to take a number of days to have the beneficial certificates issued after the purchase, but under this System, the rights are recorded in the transfer account book on the day of the purchase; and (3) it eliminates the risk of loss, theft, forgery, etc. of beneficial certificates.
A: Atoms! Hope this helps ur welcome.