of course the mimic king and queen were free to lead their hordes in attacks on people of other lands, and you may wonder why they didn't forget all about oz and content themselves with bringing misery to other countries. the reason was that the wicked king and queen of the mimics despised all that was good, and they could not endure the thought of the oz people living in peace and contentment, safe from their evil-doing. so long as the oz inhabitants remained the happiest people in all the world, king umb and queen ra could derive no satisfaction in bringing misery to other less happy lands.