What is the main reason that Rome was built on hills?
A.
The hills had fertile farmland.
B.
The hills provided a natural defense.
C.
The hills were near a port.
D.
The hills were densely populated.
A.
The hills had fertile farmland.
B.
The hills provided a natural defense.
C.
The hills were near a port.
D.
The hills were densely populated.