Original sentence: After the partition of British India in 1947, the king of Jammu and Kashmir (Modern Day Indian Jammu and Kashmir + Azad Kashmir + Northern Areas + Aksai Chin, though the borders with China were poorly defined) decided to let Jammu and Kashmir be an independent state.India accepted this and entered Kashmir, which angered Pakistan resulting in the Indo-Pakistani War of 1947.The end of the war saw India gaining most of Kashmir, including the fertile parts of it.The tribal forces, backed by Pakistan Military fought the Indian troops and were able to hold their ground in area of Kashmir which is now known as Northern Areas and Azad Kashmir.This was soon followed by a tribal uprising in Kashmir, instigated by Pakistan
Edited sentence: After the partition of British India in 1947, the king of Jammu and Kashmir (Modern Day Indian Jammu and Kashmir + Azad Kashmir + Northern Areas + Aksai Chin) decided to let Jammu and Kashmir be an independent state.India accepted this and the Indo-Pakistani War of 1947 was fought.The Pakistani forces only morally supported the Kashmiri Tribal Forces, and  primarily fought at the post-partition border areas.The tribal forces gave a tough resistance to the Indian invasion and were able to hold their grounds in area of Kashmir which is now known as Northern Areas and Azad Kashmir.This was soon followed by a tribal uprising in Kashmir