Proper noun
Kafiristan
(historical) A region that covered present-day Nuristan Province in Afghanistan and its surroundings.
The near-complete conversion of Afghans to Islam was during the period of the Ghaznavids in the 10th century with Kafiristan holding out until Emir Abdur Rahman Khan conquered and forcibly converted them in the 1890s. Source: Internet
Tajikistan is the wettest of the Central Asian republics, with the average annual precipitation for the Kafiristan and Vakhsh valleys in the south being around convert, and up to convert in the mountains. Source: Internet
The last non-Muslim Afghans of Kafiristan north of Kabul were forcefully converted to Islam. Source: Internet