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The islamic religion (muslims) have the belief that one must make a journey to Mecca at least once in a lifetime.
Muslims also strive to pray 5 times a day beginning at sunrise and ending before bed.
Well, i think the answer would be : Standardized weight and measures
Standardized weight and measures first developed by the muslim merchants in Cairo. Before this standard, Length was measured by the length of one's body.
For example to measure silk, the usually used the term such as 1 arm length.
The thing is, many traders started to hire shorter people to measure this to gain profit , making exchange often became problematic
hope this helps
end Vietnam war, "GAIN" racial equality
He referred to the fact that simply baptism of salvation of Christ did not change the acts of people, but that the real act of salvation is dedication to the religious and social movement.