Question

Itmud ud daulah's tomb was the predecessor of taj mahal.explain?

Answer 1

because it was built by Nur Jahan for her father ttmud us daulah 5 years before the construction of Taj Mahal begin.
all history comes back as mumtaz Mahal (for whom taj Mahal was built) was also itmud's grand daughter. itimud's tomb is an inspiration for taj Mahal built by shah Jahan

hope it helps