Federalism is best defined as a principle of
government that
(1) divides power between the central government
and state governments
(2) includes a system of checks and balances
(3) allows the states to nullify national laws
(4) places the most power in the hands of the
legislative branch

Federalism is best defined as a principle of government that "(1) divides power between the central government and state governments" although it varies slightly. 

The  pan-african movement  was an "emotional, cultural, psychological and ideological  movement  that began among the  african  dispora in the western hemisphere, for a closer  purpose, so that  african  people could feel secure, attain political, economic as well as psychological power visa vis other races or world regions" .