Earth

"Earth" is the planet that Steven Universe takes place on. Earth contains many native species, with the dominant sentient species being humanity.

History
Many years before the current time in Steven Universe, Gems came to Earth and established Kindergarten. The Gem War was fought here and Earth became the home of the Crystal Gems.

There are several historical differences.
 * Delmarva is a state.
 * Kansas is a major hub of the movie industry.
 * Major American cities include Charm City and Empire City.
 * Money looks different. Some coins have Gadsden-like snake symbols, or pictures of a woman resembling Pearl. $1 bills have images of an upward-pointing diamond on the left and a Gadsden-like snake symbol on the right.
 * Instead of the FBI, there is the Department of Justice: Federal Bureau. Their symbol has 12 stars instead of 13, and instead of a shield surrounded by laurels, there's a snake resembling the one from the Gadsden flag, accompanied by a waning crescent moon symbol.