I'm curious as to what leads you to this conclusion. Granted, Rome, Greece, and Egypt were great intellectual sources, but America hasn't stagnated in any way on intellectual and technological development, and we've taken humanity to areas of scientific research that none of those empires could possibly hope to have achieved in their lifespan.
In addition, of all examples, Genghis Kahn? An empire built solely out of rape, pillage, and invasion? If you're going to compare the U.S. to Genghis using the Native Americans' treatment, you should also keep in mind that we have discontinued the subjugation of Native Americans for at least three decades now (ending with some rather upsetting "final solution" schemes the government tried).
Vietnam wasn't helped by the North Vietnamese invading South Vietnam, nor was South Vietnam helped by the French bailing out, or establishing their presence there in the first place. As for Africa, we got our noses bloodied in Somalia, and if any countries in the U.N. would like to propose a joint effort to alleviate the suffering of these countries, I doubt the U.S. would be opposed to such a measure; however, as one nation, the U.S. can not solve all the problems of the world.
We ****ed up Afghanistan and Iraq. We're trying to establish a government constructed by the will of the people and fix what we screwed up.
We put the Taliban and Saddam in power; we're taking them out of power and putting into place governments elected by the people of these nations (trying to, at least). People like Hussein and the Taliban, however, would never have gone peacefully or changed their ways without forceful reinforcement.
I was under the impression that Russia hadn't been anything of a significant military threat since the fall of the Soviet Union, or, at least, there are other nations stronger than Russia.
I'm sure that's what they said about the Roman Empire and Egyptian Empire.
the idiot is the person who follows the idiot and your not following me your insulting me your following the path of a idiot so that makes you the idiot - LC Tusken