Ancient and Archaic Connections.
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धृष्टकेतुश्चेकितानः काशिराजश्च वीर्यवान्।
पुरुजित् कुन्तिभोजश्च शैब्यश्च नरपुङ्गव।।५।।
(धृष्टकेतुः चेकितानः काशिराजश्च च वीर्यवान्। पुरुजित् कुन्तिभोजः च शैब्यश्च च नरपुङ्गवः।।)
As is in the Mahabharata and so in the Shrimadbhagvad-gita We can find the reference to the different human races Czech / Chechenya, Sheba and Porus are here to think of) Sheba is The Jew, The Porus is Purujit - Who defeated King Puru or were defeated by King Puri. ChekitAnaH reminds of the Czech and the Croatian.
The Mahabharata war was kind of a World War, the Kings from all over the world were invited to participate and to / contribute)
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