 If you liked
Jin
|
 ...then you might like
Gate: Jieitai Kanochi nite, Kaku Tatakaeri
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Both series utilize and explore the concept of "introducing modern technologies to a more primitive culture", including the reactions and political developments that may be bought about as a result of said technologies.
While Gate focuses more on introducing modern idealologies and the technologies themselves to a 'swords-and-sorcery' setting, Jin focuses on practically applying modern knowledge in a more 'grounded' primitive historical setting.
Jin is more drama-focused than Gate, containing significantly less action, comedy and fan-service.