Original: The Kingdom of Armenia ( or Greater Armenia ) was an independent kingdom from 190 BC to AD 387 and a client state of the Roman and Persian empires until 428 , stretching from the Caspian to the Mediterranean seas .
Simplified: The Kingdom of Armenia was an independent kingdom from ( approximately 355 years ) 190 BC to AD 165 , and a client state of the Roman Empire from 165 to 428 .