page_title: Bihar County
section_title: Modern Times
hierarchical_section_title: Bihar County / History / Modern Times
caption_attribution_description: Magyar: Bethlen Gábor fejedelemsége
context_page_description: Bihar was an administrative county of the Kingdom of Hungary and a county of the Eastern Hungarian Kingdom and Principality of Transylvania. Most of its territory is now part of Romania, while a smaller western part belongs to Hungary. The capital of the county was Nagyvárad.
context_section_description: After the Battle of Mohács, soon the Kingdom of Hungary was partitioned, the county's territory became part of the Eastern Hungarian Kingdom, then the Principality of Transylvania. A large part of it was ruled by Ottoman Empire as Varat Eyalet between 1660–1692, before it became part of the Kingdom of Hungary again.
  In 1876 the Kingdom of Hungary was divided into seven Circles, with a total of 64 counties The Circle on the left bank of the Theiss contained eight counties, including Bihar Megye (Megye means county), with the other seven being Békés, Hajdú, Máramaros, Szabolcs, Szatmár, Szilágy and Ugocsa. Bihar county in the Austro-Hungarian Empire contained Debrecen and Nagyvárad.
  In 1920, by the Treaty of Trianon about 75% of the county became part of Romania. The west of the county remained in Hungary. The capital of this smaller county Bihar was Berettyóújfalu. In 1940, by the Second Vienna Award, the county's territory have been extended by its former parts gained from Romania.
  In 1950, the Hungarian county Bihar was merged with Hajdú County to form Hajdú-Bihar county. The southernmost part of Hungarian Bihar (the area around Sarkad and Okány) went to Békés County.
  The Romanian part of former Bihar County now forms the Romanian Bihor County, except the southernmost part (around Beliu), which is in Arad County.
caption: Bihar County (light green, in the western part of the territory) as a part of the Principality of Transylvania during Gabriel Bethlen's rule
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