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The Religion in Persia before it got conquered by the Abbasid Empire and it was one of the first Monotheistic (Single-God) Religions in the World and its believers worshipped fire through which they got a connection with God. It is on its verge of dying out. And No, It is not a Pre-Islamic Religion, Zoroastrianism was created way before Islam, about 2000 years before Islam. When Persia Became Muslim, the shahs actually started going after the Zoroastrians.
The Emancipation Proclamation given by President Lincoln on January 1st 1863 gave rights to all African Americans, to be free, allow them to travel, and work as they wish for pay.
Imperialism is the power a government has over the citizens through military force. Hope this helps! :)
Conquer and colonize the region there by bringing people and livestock