Complex sentence: Its administrative seat is the like-named village of Urgun, which used to be the provincial capital until it was replaced by Sharan in the 1970's due to its proximity to the main highway, connecting it to Kabul, Ghazni and Kandahar.
Split into simpler sentences: Its administrative seat is the like-named village of Urgun. Urgun town used to be the provincial capital until it was replaced by Sharan in the 1970's due to its proximity to the main highway, connecting it to Kabul, Ghazni and Kandahar.