The U.S. is definately a group of people ruled over by a powerful sovereign government. Let me say though, that's a lousy definition. It's too unspecific. Next, the Bush administration rules much like the British, and Roman governments did. You have an executive leader who has all the power. The legislative branch of the U.S. is too weak and corrupt to say no to the president who has veto power. The courts are responsible for Bush's presidency and are behind completely. Bush lies and exagerates to the public to start wars, like many emperors of the past and he's rigged all of the presidentialelections he has ran in recently. He's the son of the first Bush. It's an imperialistic government. It fits your dictionaries' definition.