The rest of the world cares about how we conduct our affairs because they then take that lead. We're the only leader in the world today. Some are wishing us well, others think that we're down and are not going to get back up again, but they are all watching with great interest to see how we conduct our business over the next couple of years.
Swedish chemist, Carl Wilhelm Scheele, discovered Chlorine in 1774 believing it contained oxygen. In 1810, Sir Humphry Davy tried the same experiment and concluded that Chlorine was in fact an element, and not a compound.