Justinian himself planted the seeds for the Byzantine Empire's decline. First, his constant wars and the rebuilding of Constantinople after the Nika Riot caused serious financial problems for the empire. ... Finally, during the last years of Justinian's reign, the empire suffered from several attacks of bubonic plague.
Explanation
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in 1453 sultan mehmed II of the ottoman empire conquered the Byzantine empire
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The Egyptian civilization used a number of different crowns throughout its existence. Some were used to show authority, while others were used for religious ceremonies. Each crown was worn by different pharaohs or deities, and each crown had its own significance and symbolic meaning.