Bird's-eye View Of Afghanistan

By the 17th century AD, it seems that some Pashtuns themselves were using the term as an ethnonym - a fact that is supported by traditional Pashto literature, for example, in the writings of the 17th-century Pashto poet Khushal Khan Khattak:
Pull out your sword and slay any one, that says Pashtun and Afghan are not one! Arabs know this and so do Romans: Afghans are Pashtuns, Pashtuns are Afghans!
The last part of the name, -stān is a Persian suffix for "place", prominent in many languages of the region. The name "Afghanistan" is described by the 16th century Mughal Emperor Babur in his memoirs as well as by later Mughal scholar Firishta, both referring to the territories south of Kabul that were inhabited by Pashtuns (called "Afghans" by both authors). Until the 19th century the name was used for the traditional lands of the Pashtuns only, while the kingdom as a whole was known as the Kingdom of Kabul, as mentioned by the British statesman and historian Mountstuart Elphinstone. In 1857, in his review of J.W. Kaye's The Afghan War, Friedrich Engels describes "Afghanistan" as:
... an extensive country of Asia ... between Persia and the Indies, and in the other direction between the Hindu Kush and the Indian Ocean. It formerly included the Persian provinces of Khorassan and Kohistan, together with Herat, Beluchistan, Cashmere, and Sinde, and a considerable part of the Punjab ... Its principle cities are Kabul, the capital, Ghuznee, Peshawer, and Kandahar.