Original sentence: Once a Senator in the Galactic Senate, the blockade of his homeworld, Naboo, by the Trade Federation, saw him become Chancellor of the Galactic Republic.Palpatine is leader of the Republic during the Clone Wars, and later becomes Galactic Emperor.Ultimately, Palpatine is revealed to be the alter ego of Darth Sidious, a Sith Lord of immense power and immeasurable cunning
Edited sentence: Once an ambitious yet unassuming Senator in the Galactic Senate, the blockade of his homeworld, Naboo, by the Trade Federation, saw him become Chancellor of the Galactic Republic shortly before the time of the Clone Wars, and later became absolute leader of the most crushing totalitarian government in the history of the galaxy.Ultimately, it was revealed that Palpatine was the alter ego of Darth Sidious, a Sith Lord of enormous power and considerable cunning