Complex sentence: Darvāz (: Дарвоз/درواز), alternatively spelt Darwāz, Darvoz, or Darwoz, was an independent principality until the 19th century, ruled by a mir and its capital was at Kalai-Khumb.
Split into simpler sentences: Darvāz (: Дарвоз/درواز), alternatively spelt Darwāz, Darvoz, or Darwoz, was an independent kingdom until the 19th century. Darvaz was ruled by a mir and its capital was at Kalai-Khumb.