The United States has a system of government, or one in which power is distributed between the central government and local governments. A.
unitary
B.
federal
C.
oligarchic
D.
confederate

B i got it right on the test

Explanation:

the roman republic began to expand when rome fought the punic wars and defeated carthage. the punic wars refer to the series of 3 wars fought among rome and carthage, before it ended in carthage's defeat.