The Emirate of Bukhara was a Muslim polity in Central Asia that existed from 1785 to 1920 in what is now Uzbekistan, Tajikistan, Turkmenistan and Kazakhstan. It occupied the land between the Amu Darya and Syr Darya rivers, known formerly as Transoxiana. Its core territory was the fertile land along the lower Zarafshon river, and its urban centres were the ancient cities of Samarqand and the emirate's capital, Bukhara. It was contemporaneous with the Khanate of Khiva to the west, in Khwarazm, and the Khanate of Kokand to the east, in Fergana. In 1920, it ceased to exist with the establishment of the Bukharan People's Soviet Republic.

Persian, also known by its endonym Farsi or Parsi, is a Western Iranian language belonging to the Iranian branch of the Indo-Iranian subdivision of the Indo-European languages. Persian is a pluricentric language predominantly spoken and used officially within Iran, Afghanistan, and Tajikistan in three mutually intelligible standard varieties, respectively Iranian Persian, Dari Persian, and Tajiki Persian. It is also spoken natively in the Tajik variety by a significant population within Uzbekistan, as well as within other regions with a Persianate history in the cultural sphere of Greater Iran. It is written officially within Iran and Afghanistan in the Persian alphabet, a derivative of the Arabic script, and within Tajikistan in the Tajik alphabet, a derivative of the Cyrillic script.