Which system of government divides power between the central government and sub-national political units?

Compare how one's social status affect his or her opportunities in ancient greece and rome?

What was the plight and fight of the following groups? labor farmers native americans african americans women immigrants ~ ap u.s. history (period 6: 1865-1898)

According to robert kennedy, how might the historian see 1962a. as a year of resistance by the southb. as a year of great progress in civil rightsc. as a year of rioting and violenced. as a year of resegregation