Complex sentence: In the late-nineteenth century, Kashmir and Jammu was a princely state in not part of the British Empire in India, and was ruled by a Maharaja who encouraged foreign experts to help in the development of the state.
Split into simpler sentences: In the late-nineteenth century, Jammu and Kashmir was a princely state. It was not part of the British Empire in India, and was ruled by a Maharaja who encouraged foreign experts to help in the development of the state.