Answer:
1. Many tall hills in and around Rome
2. The Tiber River
3. Steep, nearly impassable mountains
Step-by-step explanation:
Geography defines the natural borders of an area. At present as well as in past natural geaographic features acted as barriers for invaders which made it very difficult to invade that territory. Rome is located in Italian peninsula , which is bounded by ocean from east and west and also protected from Apennines located in East and North-East.