Question

2- Who built the Toy mahul Why
did he do so?​

Answer 1

I think you meant Taj Mahal

Mughal emperor Shah Jahan built the Taj Mahal by order of the Mughal emperor Shah Jahan in memory of his favourite wife, the Taj Mahal is the jewel of Muslim art in India and one of the universally admired masterpieces of the world's heritage.