The primary purpose of administrative laws are "<span>b. to define structure and power of government agencies," since in order for these agencies to do their job effectively, they must have limits and orders set on their power by Congress. </span>
Reserve ratio is the ratio of a bank's reserves to the amount of its demand deposits, i.e. its checking deposits. The Fed sets the required minimum ratio, currently 10%. Even with no specified minimum ratio, banks would have to maintain sufficient reserves to cover checks written by depositors and to provide cash on demand.
It was Giuseppe Garibaldi, who unified Italy in 1871.