What was the importance of the truman doctrine?
a. it sought to contain the spread of communism.
b. it strengthen relations between the united states and china.
c. it allowed the soviet union to develop nuclear weapons.
d. it prohibited all countries from expanding their nuclear weapons.

it sought to contain the spread of communism.

the answer is aristophanes comedies.

basic principles: federalism, separation of powers, checks and balances, judicial review, representative democracy, limited government, rule of law, individual rights and responsibilities, consent of the governed, majority rule, popular sovereignty, equal protection.