who constructed the mosque called dhai din ka jhopra
Adhai Din Ka Jhonpra The original building was partially destroyed and converted into a mosque by Qutb-ud-Din-Aibak of Delhi in the late 12th century. According to a local legend, after defeating Vigraharaja's nephew Prithviraja III in the Second Battle of Tarain, Muhammad Ghori passed through Ajmer. There, he saw the magnificent temples, and ordered his slave general Qutb-ud-Din-Aibak to destroy them, and construct a mosque – all within 60 hours (that is, ​2 1⁄2 days). The artisans could not build a complete mosque in 60 hours time, but constructed a brick screen wall where Ghori could offer prayers. By the end of the century, a complete mosque was built.[1]
Dholavira The site was discovered in 1967-1968 by J. P. Joshi ex. D.G. of A.S.I. and is the fifth largest of eight major Harappan sites. It has been under excavation since 1990 by the Archaeological Survey of India, which opines that "Dholavira has indeed added new dimensions to personality of Indus Valley Civilisation."[7] The other major Harappan sites discovered so far are: Harappa, Mohenjo-daro, Ganeriwala, Rakhigarhi, Kalibangan, Rupnagar and Lothal.