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At Tahrir District's population is 66,898.
Hizb ut-Tahrir was created in 1953.
The UL ratio becomes 1:1 by the age of 10 years.
"u" in this case stands for micro, so 1 uL is 1 micro-litre or 1 millionth of a litre.
Tahrir Square was the scene of huge demonstrations during the "Arab Spring." Where is Tahrir Square located?