What do ancient India and ancient Egypt have in common?

They have some of the oldest civilizations of the world, and they have all still have many different religious beliefs.

Well, both countries contained ancient civilizations, Egypt being the Egyptians and Nile River Valley, and India being the Indus River Valley civilization. Also, the people of both regions had specific religious beliefs like in Egypt, they believed in, well, Egyptian gods and goddess and in India, at the time it might have been anywhere from indigenous beliefs, to Islam, to Hinduism. Both regions made important technology civilizations that impact us even today. Both regions were a culture hearth and at their peak, they thrived and prospered immensely.