"It showed the shift from an agricultural based-economy into an industrial-
<span>based economy" is the best option since this migration brought black workers from the South to the North, where factories were flourishing and job opportunities were higher. </span>
They knew the Greek idea of direct democracy. While they didn't necessarily apply the idea in their political system directly, they did apply some ideas that were shared with the Greeks that made the Roman political system more stable and better in the end.
In what audience specifically?