The Jedi Order, a religious group of Force-sensitives dedicated to the light side of the Force, was sworn to the service of the Senate, and as such the Jedi Knights were hailed as the guardians of peace and justice within the Republic.

As its power grew, the Republic fought many wars against various opponents such as Mandalorians, the Zygerrian Slave Empire, the Nihil and several Sith Empires. The Republic governed the galaxy from the Core Worlds to the Outer Rim Territories, uniting various sentient species, human and alien alike, under one banner. An ecumenopolis or city-covered planet, referred to as Galactic City, Coruscant was the capital of the Republic and therefore the seat of the Senate. The Supreme Chancellor was the title of the Republic head of state, elected from ranks of the Senate to lead the government on Coruscant. The Galactic Senate governed the Republic under the Galactic Constitution, and comprised thousands of senators representing the Republic's member worlds. The Republic was founded many millennia before the Battle of Yavin, approximately 25,000 BBY, around the same time as the Jedi Order. In addition, the term High Republic denoted the era in which the Republic reached the zenith of its power from 300 BBY to 82 BBY.

Old Republic was a term affixed to the pre-modern Republic that existed until 1032 BBY, and the modern Republic that was supplanted by the Galactic Empire in 19 BBY. The Galactic Republic, also known as the Grand Republic or simply as the Republic, was a democratic union comprising thousands of star systems spread across the galaxy. ' The Galactic Republic was the Republic of legend, greater than distance or time.' вЂ•Janyor

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