That America has received so many is equally laughable IMHO. They have been the dominant power for about a 100 years, which really is almost no time at all. They might make the list in the future, but as we are deciding on it now they dont deserve to be that high. Britain, Mongols, China, Rome, Greece, Egypt, Ottomans, France, all deserve to be higher IMO. The ottomans had an empire that lasted almost 1000 years and had a huge impact in the middle east and Asia (and Europe). Britain had the biggest empire (most populous). the Chinese were enormous and the most technologically advanced people of their era. Rome dominated all of Europe, which is a feat no one but them has managed. Greece is responsible for the basic principles in mathematics and philosophy. Mongols had a truly enormous empire for the age, they definitely fit into the most impressive category. Egypt was again a scientifically and highly advanced civilization and their monuments were by the standard of the times, out of this world. And the French, like Britain, also had a highly impressive world empire.
If your argument is that America gave us hamburgers and denim jeans and therefore deserves to be on the list then i think that pretty much sums up your argument
. Im not saying they have not done some great stuff, its just that others have more impressive things. As a great British industrialist remarked "The british invent it, the Americans develop it, the Japanese exploit it, and the french resent it".