Oyo Empire culture in Oyo where victory was obligatory and defeat carried the duty of committing suicide. This do-or-die policy no doubt contributed to the military aggressiveness of Oyo's generals. The Oyo Empire was the only Yoruba state to adopt cavalry; it did so because most of its territory was in the northern savannah. The origin of the cavalry is disputed; however, the Nupe, Borgu and Hausa in neighboring territories also used cavalry and may have had the same historical source. Oyo was able to purchase horses from the north and maintain them in metropolitan Oyo because of partial freedom from 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