A lot of time passed between between the Greeks and British. Near the end of the Roman Empire, the Romans faced a labor shortage and an important economic syst

A lot of time passed between between the Greeks and British. Near the end of the Roman Empire, the Romans faced a labor shortage and an important economic system was implemented by Constantine, which would later be copied by everyone else and dominate Western Europe until the Renaissance (It began to decline after the Bubonic plague improved the labor bargaining power of the less well off) . The system was called later called Feudalism, and abolished private ownership of land. I'd add another point, the Romans are a better comparison to the Greeks, as they were closer in time. the Romans were far more centralized than the Greeks - The Athenians were directly democratic - That it was hard to scale so the Romans had an extensive system of laws. In terms of overall scientific output there is no comparison, the Greeks were greater by a massive margin.