 The first structure to be called "Rostra" was on the south east section of the forecourt of the Curia Hostilia at the edge of the Comitium.As the population grew, not all Romans could fit in the comitium, and speakers in the later Republic would turn their backs on the Curia and crowds within the Comitium and direct their speech to the crowd in the Forum.All of the city's most important decisions and laws were made in the senate.