Barakzai dynasty
The Barakzai dynasty was the line of rulers in Afghanistan in the 19th and 20th centuries. Following the fall of the Durrani Empire in 1823, chaos reigned in the domains of Ahmad Shah Durrani's Afghan Empire as various sons of Timur Shah struggled for supremacy. The Afghan Empire ceased to exist as a single nation state, disintegrating for a brief time into a fragmented collection of small units. Dost Mohammad Khan gained preeminence in 1823 and founded the Barakzai dynasty in about 1837. Thereafter, his descendants ruled in direct succession until 1929, when King Amanullah Khan abdicated and his cousin Mohammed Nadir Shah was elected king. The most prominent &amp; powerful sub-clan of the Barakzai Pashtun tribe is the Musahiban, of which the 1823–1973 Afghanistan ruling dynasty comes.