i'd have to agree with the destruction of the Native Americans... im currently in AP US Hist. and I've really been surprised by what was done to the Natives (we nearly eradicated them just through the diseases we brought to the country- small pox)
i was surprised the environment wasn't included. America is the number one polluter and user of energy. we've turned the oceans to crap and overharvested them as well. We've destroyed a good portion of our natural forests within the US. We've also supported the destruction of much more land around the world, the amazon, etc. (through lenient policies, economic finance, and people's desire for goods). We've destroyed people's opportunity in their "environment " through sweat shops that produce American clothes and other goods. What about all tobacco products? America makes a good deal of tobacco and houses the major companies, and then we allow them to be sold and used not only in America and other first-world nations(where people at least know of the effects), but many third-world nations where people don't know. What about our illegal drug market? We've ruined more land that could've been used for growing vegetables or fruits, but now is used to grow opium, marijuana, etc. There's many more examples of how our economic needs and political actions have ruined the environments around the world.