What’s the difference between canal and rivers

The difference between a canal and a river is that a river is the work of nature, and a canal is a channel for water made by men. Canals, or water-channels, have been made by men for two different purposes. And yet there is plenty of water, which runs away in the rivers uselessly to the sea.

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(jacemorris04)

the arab empire adopted the muslim religion as their main belief. arabs would influence the people from the territories they invaded towards islam (the muslim belief).

nevertheless, throughout the history of the arab empire, rulers brought intellectual individuals from other religions to their centers of learning. these other foreigners included jews, christians, greeks, persians, and indians.   these resulted in the adoption of important knowledge developed by these cultures by the arabic empire. for example, the works of aristotle were translated from greek to arab and indian scientists brought the numerical concept of "zero" to the arabs.

nowadays, 93% of the arab population is muslim, which at the same time is subdivided in sects including the sunni, zaini, alawi, shia. the remaining 7% is composed mainly of christians.