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In page Yerevan:

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In 587, during the reign of emperor Maurice, Yerevan and much of Armenia came under Roman administration after the Romans defeated the Sassanid Persian Empire at the battle of the Blarathon.[citation needed] Soon after, Katoghike Tsiranavor Church in Avan was built between 595 and 602. Despite being partly damaged during the 1679 earthquake), it is the oldest surviving church within modern Yerevan city limits.[citation needed]