@Iclamae, re: monotheism/polytheism, I don’t think there’s actually a clear-cut line between them. They sort of exist on a spectrum.
On the “polytheist” side, you have the ancient Greeks, Egyptians, Babylonians, and Hindus (not modern). They had pantheons of multiple gods, each of whom would accept your prayers for various things.
But then, in most of these religions, there was usually a head god/king of the gods (Zeus, Re, Marduk, and Indra, respectively). As these religions develop, sometimes the head god is the only one people care about (in Babylonian mythology, Marduk absorbs all the names of the other gods). This is where these religions start to verge into monotheism, with only one god actually being worshiped. The fancy word for this is henotheism.
Modern Hinduism is henotheistic. Hindus usually worship one of two “head deities”—Shiva or Vishnu. In Vishnu’s case, one of his avatars (Krishna or Rama) accepts prayers (sort of like how Christians pray to Jesus.)
In henotheism, the religion acknowledges the existence of other gods—sometimes it casts the other gods as “aspects” of a supreme god or something like that. This isn’t all that different than all three major monotheistic traditions. Both Yahweh and Allah, in their associated religions, have heavenly hosts—angels. Angels are similar to many pagan gods. They often act like “aspects” of Yahweh, if not entirely separate entities. There is an entire community of these named entities. So, are Judaism, Christianity, and Islam really “monotheistic”?
And then, of course, the Catholics have their magical saints. Shi’ite Muslims also have magical saints, and the Jews have magical rabbis. Not pure monotheism either.
I actually can’t think of a “purely” monotheistic religion, with only a single supernatural being. Even Unitarianisn and Baha’i have their magic prophets.