Brief Biography of Shah Shuja:
Shah shuja was second son of shahensha Shahjahan, he(shuja) was religioius and followed sainthood, sufism was on flowing from peak then,. he didn't show interest in either kingdom or throne.. one thing in those days people that most of them were followed and practised spiritualism. we can say that that era was cultural and spiritual..
Unfortunately his third brother aurangzeb, who is much familiar as alamgir aurangzeb, killed him.