Explain in detail how the geography and climate of the Italian peninsula affected the development of ancient Rome

The geography of ancient Rome was normally by relatively steep hills on the left bank of the river Tiber. Some historians say that that the rivers made culture harder for the development in Ancient Rome. The rivers split cultures and Rome into different places. Hills where also said to have done this. The climate made it even worse. Rivers of course got higher with the rain and sometimes overflowed into the villages. When there was no rain the crops wouldn't be able to grow and animals would dye because they would have no water. These things really affected Rome in some ways, but also helped in other ways.