Which of these factors had a direct influence on the spread of postclassical empires?
a. expansion of transcontinental trade routes
b. the unification of europe under the roman empire
c. european exploration of the western hemisphere
d. the establishment of most major monotheistic religions

states

explanation:

as the old saying goes, all politics are local. state and federal governments affect our daily lives in numerous ways. yet, in our federal system, there is supposed to be a balance between federal and state power. as james madison envisioned it in federalist no. 51, “the power surrendered by the people” would be “divided between two distinct governments,” creating a balance of power that would enable the “different governments [to] control each other.”