Neptune was the brother of Jupiter and Pluto; these three ruled the kingdoms of Heaven, Earth, and the Underworld. Neptune was the God of what?

Neptune was the Roman deity of fresh water and the sea, and was the equivalent of the Greek deity Poseidon. As with Poseidon, the Romans worshiped Neptune as a deity of horses and called him Neptunus Equester, a patron of horse racing.

Asked by Vasilii Kulev · Last updated 4 years ago · 3.3K views · SOURCE