Complex sentence: The early years of Malla era were turbulent with raids and attacks from Khas and Turk Muslims as well as devastating earthquake which claimed the lives of a third of population of Kathmandu, including the king Abhay Malla.
Split into simpler sentences: The early years of the Malla era were turbulent, with raids and attacks from Khas and Turk Muslims. There was also a devastating earthquake which claimed the lives of a third of Kathmandu's population, including the king Abhay Malla.