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The Interstellar Federation (IF) is an dominant galactic government of the Touhou galaxy since G.C. 4410 until the Federation was collapse in G.C. 6517 following the end of Great Universe War and death of Princess Kagami Hiiragi by Star Conflict and reformed into the Lowee Empire. The Interstellar Federation is simply known as the Federation, or commonly known as Bird by most of general populance in the Federation.