I know for sure that it is the first and second one but i think the last answer will be your number 3.
Answer: Topics
Explanation:The constitutional principles of checks and balances, federalism, limited government, popular sovereignty, republicanism, and separation of powers. I hope that helps
The idea of nullification was NOT a legacy of the Civil War.
The correct answer between all the choices given is the last choice or letter D.
D.the idea of nullification
Explanation:
The Sesquicentennial of the American Civil War is an occasion to reflect the legacy of that great conflict. This legacy is our heritage, and despite many permanent features, we continue to accommodate the resolution of that conflict. The Civil War was supported over constraint, but not always on account of slave.
The Monroe doctrine was the reaction and effect of the European powers plan to help Spain create or retake colonies in America. the doctrine, enacted in 1823,pointed out that the USA would intervene to protect the peace and freedom of independent states in the region of America.