Complex sentence: In 1293, the Bhattis enraged the emperor Ala-ud-din Khilji, whose army captured and sacked the fort and city of Jaisalmer, after which it was deserted.
Split into simpler sentences: In 1293, the Bhattis enraged the emperor Ala-ud-din Khilji. His army captured and sacked the fort and city of Jaisalmer, after which it was deserted.