Galactic Republic (Earth-2042)

"The Galactic Republic was the Republic of legend, greater than distance or time. Tales of its founding have been occluded by the haze of intervening millennia, and its rebirth a thousand years ago was regarded as the latest evolution in an unending cycle. Like the greatest of trees, however, the Republic's decline began from within, with a deep rot that was not apparent until it was too late."

- Janyor

The Galactic Republic, commonly known as the Republic and remembered as the Old Republic, was a federal parliamentary republic comprising thousands of worlds spread across the galaxy. Adhering to a democratic constitution, the Republic was governed by a legislative body of two thousand senators, known as the Galactic Senate, appointed to represent the interests of their respective homeworlds on the galactic stage. It was led by the Supreme Chancellor, who was chosen from among the Senate's ranks to arbitrate congressional sessions and represent the Republic as a whole. Coruscant, a planetary ecumenopolis located in the Core Worlds, was the Republic's capital, and therefore, where the Senate was headquartered.

Source

 * https://starwars.fandom.com/wiki/Galactic_Republic.