The US has a lot of history to deal with - genocide of Native Americans, slavery, treatment of women, to name a few. A number of horrible wars since the aftermath of WW2.
We are also going through significant challenges right now - social, political, economic, foreign relationships.
We may or may not survive as a country. We may have a positive or adverse effect on the rest of the world as we go through what we must go through.
However, the rest of the world is simply not innocent.
Europe has a lot to account for. So does Russia, China, Japan. And lets not forget the Islamic and Ottoman empires, which easily matched and in many respects put to shame the slavery, colonization, genocides, ethnic cleansing, and apartheid of the American, European, and Asian empires.
Most of the worlds current problems are the result of the collapse of these empires about 100 years ago, payment for the failure of their insufferable mentalities over many centuries.
Right now the US is facing payment for its past, the rest of the world is still paying for its past.