[3] Europe North America Oceania Punjab lies to the east of the Pashtun region and has shared borders with Afghanistan at various points in history.
[4] For several centuries, dynasties centered in modern Afghanistan expanded towards Punjab, such as the Kushans, Kidarites, Hephthalites, Ghaznavids, Ghurids, Khaljis and Durranis.
Kaye's The Afghan War, Friedrich Engels describes Afghanistan as "an extensive country of Asia" which "formerly included... a considerable part of the Punjab.
"[5] In the 19th century, the Sikh Empire originating in Punjab made a series of incursions towards the Afghan frontiers, capturing large swathes of territory to the Khyber Pass.
[6][7] Not all Sikhs are of Punjabi origin however; a small minority include locals whose ancestors adopted Sikhism during Guru Nanak's 15th century expeditions to Kabul.