A vilayet, also known by various other names, was a first-order administrative division of the late Ottoman Empire. It was introduced under the Vilayet Law of 21 January 1867, part of the Tanzimat ref
Vilayets of Europe in 1870
Vilayets of Europe in 1893
Vilayets of Europe in 1910
The eyalet, also known as beylerbeylik or pashalik, was the primary administrative divisions of the Ottoman Empire.
Vilayet
…The Ottoman Empire had already begun to modernize its administration and regularize its eyalets in the 1840s, but the Vilayet Law extended this throughout the empire, regulating the hierarchy of administrative units. Each vilayet or province was…
Provinces of the Ottoman Empire in Europe, Asia, and Africa in 1692, divided into beylerbeyliks, protectorates and tributary states. By Guillaume Sanson (1633–1703).
The 1803 Cedid Atlas, showing the Middle Eastern eyalets
Eyalets in the 17th century