The constitutional issue at the center of the american civil war was
a. the balance of power between the president and the congress
b. the balance of power between the state governments and the federal government
c. conflicting claims between the individual and society
d. the rights of immigrant labor versus the rights of slave labor

The constitutional issue at the center of the American Civil War was "b. The balance of power between the state governments and the federal government," since the states argued that the federal government was abusing its power byt trying to limit the spread of slavery to new states. 

Greece. Greece was home to many great thinkers, mainly being all fueled by the ideas of Socrates, whom I would credit many major political and philosophical ideas to.