The difference between interstellar federation and empire.

The difference between them lies in their different views on power and justice.

1. Different powers: Interstellar Federation is usually described as an alliance of multiple planets, and its goal is to promote peace, cooperation and prosperity. In contrast, empires tend to force unification and control, usually ruled by emperors or similar leaders.

2. Justice is different: in the Star Wars series, the interstellar federation is a political entity voluntarily joined by various planets, while the Galactic Empire is a military dictatorship led by Emperor Palpatine. In the series of novels "Galactic Empire", the Galactic Empire is a political entity with extensive control and cruel rule, and Al-Qaida tries to overthrow it by using psychohistory.