Analysis of information sources in references of the Wikipedia article "சகர்கள்" in Tamil language version.
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(help)The evidence of both the ancient authors and the archaeological remains point to a massive migration of Sacian (Sakas)/Massagetan tribes from the Syr Daria Delta (Central Asia) by the middle of the second century B.C. Some of the Syr Darian tribes; they also invaded North India.
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