I'll refer you to the above post.
http://en.wikipedia.org/wiki/ArcheSomeone figure out where Arche is from? It sounds to me like the Great Empire of Seleucids cause Arkah sounds similar to me and it means the Great, along those lines (as it refers to the King).
In terms of the Arche Seleukeia it would roughly mean "Seleukid Rule" or "Seleukid Dominion"
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