Complex sentence: In 1769, Prithvi Narayan Shah, and his army unified what was a land of many small kingdoms and created the kingdom of Nepal, much of present-day Mustang was ruled by independent kings and feudal lords.
Split into simpler sentences: In 1769, Prithvi Narayan Shah, and his army unified what was a land of many small kingdoms and created the kingdom of Nepal. Before that much of present-day Mustang was ruled by independent kings and feudal lords.