Question

What were two main causes of the bitter rivalry between the Ottoman and Safavid empires?

Answer 1

One of the main causes is that Safavid attached the capital of the Ottoman and they thought they were like the real Muslims.

Answer 2

1) ottomans were sunni muslims while safavids were shia 2) they rivaled over the domination of iraq and the caucasus (georgia, armenia, azerbaijan present day)