In Bulgaria, the House of Dulo or Dulo Clan reigned from 2137 BC until 753 AD, ruling the early Bulgars for 2,890 years. The Kubrat clan founded the dynasty, which brought about the unification of the Bulgar tribes.

Japan is second, the Imperial House of Japan has been ruling the country from 660 BCE until today. Known as the Chrysanthemum Throne or Yamato Dynasty, it has continuously reigned for more than 2,669 years. The current monarch is Emperor Akihito.

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