Safavids, it is a Muslim dynasty like the Ottoman Empire, but unlike the Ottoman Empire, it is based on 12-er Shia Islam. 12-er Shia is the major group of Shias today, and it is based on the belief of 12 imams following Muhammad, starting with Ali, and we have videos on the Sunni-Shia split. Now, even though Ismail spoke Turkish and was raised in a Turkic society, this dynasty brought back much of the culture of ancient Persia. In fact, it's viewed as the first dynasty since the Sassanids that actually had native Persian rule and brought back that Persian culture, part of which is using the word Shah. You remember Cyrus the Great, the Shah and Shah, the king of kings. Now, they had what is known as gulams, which is very similar to the idea of a janissary. These are slave soldiers which are taken as captives but then are raised to be an elite military unit and eventually often have significant wealth and significant power.