What major affinities did both Buddhism and Hinduism have that allowed them to crystallize in the first half of the first milleium C.E.?

Essays Only. I am looking for your critical analysis of the questions. This means you must read the text. and demonstrate you understand the coneepts. Each essay should be 700 to 1,000 words.1) Today, Shia Islam is deeply rooted in Iran. However, the Iranian people had a long tradition of religious evolution towards monotheism. How did Manichaism, Zoroastrianism, and Nestorian Christianity “prepared” Iranian society for Shia Islam?2) Dr Sanjay Gupta is a household name but his ancestors emerged from a classical Golden Age of Guptas. Who are these ancient Guptas and why was their age so golden? Which world faith did they stabilize and encourage?3) Did India have a Classical Indian Civilization? What major affinities did both Buddhism and Hinduism have that allowed them to crystallize in the first half of the first milleium C.E.?4) Buddhism spread throughout Far East Asia and Indonesia. In fact it reached refinement in Japan. why was this faith so popular outside of India and how did it “civilize Koreans and Japanese?