Islam is a minority religion in South Sudan; this map is using pre-independence data for the entirety of Sudan.

Sources

• Turkish Daily News - Islam's rapid rise giving Russia growing pains (notes 30 million as the high end of an estimate).
• Times Online - The rise of Russian Muslims worries Orthodox Church (2005 figure: 21 million).
• Muslims in Russia - A benign growth (doesn't show a figure in the publicly available portion of the article)
• TIME - Islam in Russia (an article from 1961! lists a figure of 30 million). Not specifically indicated if this figure was for the RSFSR or the entire Soviet Union. See the upper right-hand corner for the date.
• Pew Research Center - Mapping the Global Muslim Population: A Report on the Size and Distribution of the World’s Muslim Population archive copy at the Wayback Machine

• CIA - The World Factbook - To view percentages visit country by choice, and select 'People' [1] archive copy at the Wayback Machine.

• Census Bureau: Statistical Agencies - Percentages of the governments census data, select country of choice for statistics.

For more information, please visit Islam by country at Wikipedia.

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