Origin of Iddely, Dosa and Sambar - Controversies in history

Origin of Iddeley is claimed by Kannadigas, Gujarathis, Maharashtrians and Malasians. 

Origin of Dosa is claimed both by Tamilians and Amdhraits. Sambar is of recent origin and is from  Tamilnadu.
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References: 
http://controversialhistory.blogspot.com/2008/09/origin-of-idly.html
 
http://en.wikipedia.org/wiki/Idli

http://en.wikipedia.org/wiki/Dosa

http://en.wikipedia.org/wiki/Sambar_%28dish%29
 

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