The two contributions that Etruscans make were the Cloaca Maxima and the Etruscans’ architecture. Etruscans were the first who laid the groundwork for the Cloaca Maxima water conduit system. Roman population was enormous and the need of the water needed to be matched with the demand. Hence, the most humongous inheritance Romans had from the Etruscans that was the Cloaca Maxima waterworks system. The other contribution was the architectural innovation Etruscans made had the ever-ending impact on Romans. Etruscans temples were made with the different form than the Greek.