According to the passage, Rome was founded at a site along the Tiber, which ----.

The Romans were descended from a cluster of
peoples who had crossed the Alps into Italy during
the second millenium B.C. and spoke a variety of
Indo-European dialects. Recent archaeological
research has pushed the origins of the city of Rome
back to at least the tenth century B.C., several
centuries earlier than the traditional date 753 B.C.,
which the Romans themselves considered their city's
foundation year. Rome's strategic location along the
Tiber River brought it many different advantages.
Trading ships could navigate the Tiber as far as
Rome, but no farther; the city could thus serve as a
port without being threatened by attack from the sea.
Rome's famous hills increased the defensibility of the
site. In other words, as a city, Rome was situated at
a junction across the Tiber, making it a major land
and river crossroads.