We have that in ancient Athens the people participated directly in voting for laws through an organ that was open to all citizens (this included only men, non-slaves). In contrast, in the US we have that the citizens do not directly decide on matters; rather they elect their representatives in the various governmental bodies and these representatives decide on matters. Thus, the main difference is summarized in d. There is no council of 500 in the US (like there was in Athens) and the first 2 facts are not true.
