In 1947 , by the Indian Independence Act 1947 , the British abandoned their supremacy , and following the Independence of India and Pakistan Amb 's Nawab decided to give up the independence the state had previously enjoyed by acceding to the new country of Pakistan . In 1947 , by the Indian Independence Act 1947 , the British abandoned their supremacy , and following the Partition of India Amb 's Nawab decided to give up the independence the state had previously enjoyed by acceding to the new country of Pakistan .