Complex sentence: There are seven distinct Pashtun tribes named Barakzai, with the Zirak branch, Musahiban of the Durrani tribe being the most important and largest tribe with over 4 million people.
Split into simpler sentences: There are seven distinct Pashtun tribes named Barakzai, with the Zirak branch, Musahiban of the Durrani tribe being the most important. The largest tribe with over 4 million people.