safety (keep country safe from other countries), keep order (enforce laws w/ police and justice system), provide services (gen welfare), guide society (public policy)
national>regional gov
unitary
national=regional gov
federal
regional>national gov
confederal/confederate
unitary pros, cons, ex.
pro - national unity, consistent
con - may not work everywhere, doesn't know regional needs
ex. Japan
federal pros, cons, ex.
pro - flexible, diverse
con - competing laws
ex. India
confederal
pro - peaceful, no dictator, regional needs met
con - national no control
ex. EU & UN