Ancient Greece was a democracy, just as the US is today (however, Ancient Greece was somewhat a direct democracy while the US is a representative democracy, which is a system based off the Romans). The US also has a considerably high Greek and Greek speaking population, as of course, did Ancient Greece. Ancient Greece had, as the US partially does today (on the Pacific Coast), a Mediterranean climate. The Olympics were a sporting event from Ancient Greece and has been modernized, which the US participates and dominates in (specifically the Summer Olympics).