When you think about religion, the two most popular views are monotheism and polytheism. They aren't all the same. Each religion is unique and has its pros and cons. The major difference between religions is the way they see the world. Monotheism can be peaceful and allow everyone to worship the one God. This helps to avoid conflicts between different civilizations.
Mythology
The difference in monotheistic and multitheistic mythologies doesn't lie in the nature or representation of the gods. Polytheistic mythology views the gods as the product of long-term interactions between the gods.
There were twelve Olympian Gods in ancient Greece. Demeter, Apollo and Artemis were also gods. Each god served a specific purpose, including providing sustenance. A few were excluded, though, such as Hades, who lived in the underworld.
Morality
They have very different moral values. Monotheism tends toward absolute values, while polytheism allows relative morality. Although the two approaches are quite different, they both emphasize individual responsibility.
Monotheistic religions generally elevate one god into a supreme place. They then treat the other gods as manifestations of this supreme god. In this way, they become essentially monotheistic.
Religion
Monotheism and polytheism are two different approaches to religion. Monotheists believe that there is one divine creator. The Polytheists on the other side believe in multiple deities. Although each side claims to be right on a particular point, they disagree on what constitutes a true religion.
While polytheism is believed to have led to monotheism, the reasons for its rise are not clear. Monotheism is a result of one of two processes, according to modern religious philosophers.