Leaders of Italian city-states had to keep a good relationship with other leaders of neighboring city-states. What did Italians develop to deal with other city-states?

Why is julius caesar considered an important roman leader? a. his assassination led to a civil war that ended the roman republic.b. his commitment to justice led to the creation of the twelve tablesc. his support for democracy led to expand voting rights for all romansd. his policies as dictator led to a period of peace known as the pax romana