Complex sentence: The U.M.N. is under the jurisdiction of the U.M.N. Management Agency, meaning the U.M.N. Management Agency virtually controls all information within the Galaxy Federation Government, making it a very influential angency within the central government.
Split into simpler sentences: The U.M.N. is under the jurisdiction of the U.M.N. Management Agency. This mean that the U.M.N. Management Agency virtually controls all information within the Galaxy Federation Government, making it a very influential angency within the central government.