But the second tomb was never built.By the time the Taj Mahal was finished,the emperor's sons had grown to manhood and were quarrelling with each other over which one should be the next emperor.Finally the second son succeeded in banishing one brother and killing the ether two.He then seized the throne and imprisoned his fathe in a fort about a mile away,where he was forced to spend the last eight years of his life-out of sight of the lovely Ta Mahal. the e reason why the emperor drdn't build another tomb for himself.But the second tomb was never built. By the time the Taj Mahal was finished, the emperor’s sons had grown to manhood and were quarrelling with each other over which one should be the next emperor. Finally the second son succeeded in banishing one brother and killing the other two. He then seized the throne and imprisoned his father in a fort about a mile away, where he was forced to spend the last eight years of his life—out of sight of the lovely Taj Mahal. the reason why the emperor didn’t build another tomb for himself