Oyo Empire metropolitan Oyo. This may have been fine in the 15th century when Oyo controlled only its heartland. But to make and maintain farther conquest, the structure underwent several changes. Oyo maintained a semi-standing army of specialist cavalry soldiers called the "Eso", the "Esho" or, formally, the Eso of Ikoyi. These were 70 junior war chiefs who were nominated by the Oyo Mesi and confirmed by the Alaafin of Oyo. The Eso were appointed for their military skill without regard to heritage and were led by the Are-Ona-Kakanfo. After Oyo's return from exile, the post of Are-Ona-Kakanfo was established as the
History of the Jews in 18th-century Poland an independent country. The great bulk of the Jewish population was transferred to Russia, and thus became subjects of that empire, although in the first half of the 19th century some semblance of a Polish state was preserved, greatly diminished, especially in the form of the Congress Poland (1815–1831). History of the Jews in 18th-century Poland The 18th-Century for the Jews of Poland was a tumultuous period as political unrest in the Polish–Lithuanian Commonwealth led to changes in the treatment and behavior of Jews living within its territory. The ascent of the Wettin dynasty to the Polish throne, as well