Original sentence: The X-Men and Joseph - who had fallen under Astra's control again - opposed him, but even as the X-Men defeated him (leaving his powers severely depleted as a result of over-strain), and Joseph sacrificed his life to restore the Earth to normal, the United Nations, manipulated by Alda Huxley (the United Nations mutant affairs officer), ceded the island nation of Genosha, which had no recognised government, to Magneto
Edited sentence: As the self-styled Master of Magnetism, he wields the electromagnetic fields of the planet as if it was child's play.He is an elemental force given human form.The X-Men and Joseph - who had fallen under Astra's control again - opposed him, but even as the X-Men defeated him (leaving his powers severely depleted as a result of over-strain), and Joseph sacrificed his life to restore the Earth to normal, the world governments, pressed by Alda Huxley (the United Nations mutant affairs officer), decided to give the Master of Magnetism the island nation of Genosha.With command of his powers, he has stopped armies, moved mountains and changed the course of rivers