Rise of the Council of Plebs in Rome, 500 BCE

Tensions between the two classes continued to grow, especially since the poorer residents of the city provided the bulk of the army. They asked themselves why they should fight in a war if all of the profits go to the wealthy. Finally, in 494 BCE the plebians went on strike, gathering outside Rome and refusing to move until they were granted representation; this was the famed Conflict of Orders or the First Succession of the Plebs. The strike worked, and the plebians would be rewarded with an assembly of their own - the Concilium Plebis or Council of the Plebs. (via https://www.ancient.eu/Roman_Republic/)