Money is an intermediary commodity, devised to ease trade. A central concept in economics, money standardizes prices to be expressed in monetary units. Money may be any commodity that is generally agreed upon, historical examples include pigs, rare seashells, wight units of gold or silver, metal coins and paper bills.
Banking depends heavily on previous development of money.
A feature of modern finance is the ease of moving money around the world, using networks such as SWIFT.
see also gold standard