The Zand dynasty was an Iranian dynasty, founded by Karim Khan Zand that initially ruled southern and central Iran in the 18th century. It later quickly came to expand to include much of the rest of contemporary Iran as well as parts of Iraq. The lands of present-day Armenia, Azerbaijan, and Georgia were controlled by khanates which were de jure part of the Zand realm, but the region was de facto autonomous. The island of Bahrain was also held for the Zands by the autonomous Al-Mazkur sheikhdom of Bushire.

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.