It is used on countless mosques and minarets, by charities, and as part of the flags for various Muslim nations, including, Algeria, Azerbaijan, Comoros Islands, Malaysia, Maldives, Mauritania, Pakistan, Tunisia, Turkey, Turkmenistan, Turkish Republic of Northern Cyprus, Uzbekistan, and Western Sahara.
It has been claimed that it was not until the Ottoman Empire that the crescent moon and star became affiliated with the Muslim world. When the Turks conquered Constantinople (Istanbul) in 1453, they "adopted the city's existing flag and symbol".
However, in 1453 the crescent and star symbols were not a part of any known Byzantine flags, and they were already widely used in different parts of the Muslim world, long before the fall of Constantinople.
A few examples include; Islamic coins from as early as the 7th century, Egyptian and Syrian jewellery from the 11th century, Persian armor of the 10th-12th century, and paintings and drawings depicting Islamic mosques from areas, which then were not covered by the Ottoman Empire and from the times before the fall of Constantinople.
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- Yahweh or Hubal - Australian Islamist Monitor, December 13, 2006 (archived from the original), http://www.webcitation.org/query?url=http%3A%2F%2Fwww.australianislamistmonitor.org%2Findex.php%3Foption%3Dcom_content%26view%3Darticle%26id%3D16%3Ayahweh-or-hubal%26catid%3D177%26Itemid%3D63&date=2011-05-09
- Karen Armstrong (2000, 2002) - Islam: A Short History - p. 11. ISBN 0-8129-6618-x.
- International Federation of Red Cross and Red Crescent Societies
- Islamic flags - Flags Of The World, October 18, 2008
- Christine Huda Dodge - Crescent Moon - Symbol of Islam? - About.com, accessed May 9, 2011
- Byzantine Empire - Flags Of The World, April 24, 2010
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