Mostly by translation. Keep in mind leaders rarely met face to face, and most communication was thus written, usually by scribes rather than the leaders themselves. A leader with a lot of resources could probably find a scribe that speaks Persian and can write in the various forms of Greek common at the time, or vice versa. Also, leaders tended to be multilingual themselves.
Impossible-Row-3070 t1_ixiokyz wrote
Reply to Might be a stupid question, but I've been watching a lot of stuff regarding the Spartan and Persians recently and I always wondered how would these people have communicated back then? Were there specific scholars in both countries that were trained in various languages? by herewego199209
Mostly by translation. Keep in mind leaders rarely met face to face, and most communication was thus written, usually by scribes rather than the leaders themselves. A leader with a lot of resources could probably find a scribe that speaks Persian and can write in the various forms of Greek common at the time, or vice versa. Also, leaders tended to be multilingual themselves.