Which is more democratic: Old BC Rome or USA today?

You mean when only rich white men were allowed to vote? And like 90% of the population had no say? I dont really consider that democracy.

Although not everybody was represented equally in the Roman Republic, the plebs (lowest class) did have some power. The tribunes were elected directly by the people to act as advocates on their behalf. However, as wealth in Rome became concentrated in the hands of fewer and fewer people, so did power. The violent struggles in the late Roman Republic were largely the result of politicians trying to make reforms that would spread the wealth more evenly, and other politicians resisting those efforts, usually successfully. Rome offers a classic example of how power in a society follows the trend of the wealth: when wealth is spread more evenly among the people, so is power. When wealth is concentrated, so is power. This seems to be happening in the United States as well, especially when you consider that the American political system relies heavily on financial contributions to get people into office.