no paper money,to see if trade,to pay for goods,for there wight,to pay for the trade,money is really good,for barter,factory makes money,debit card,hard to caunterfit,currency,money,exchange them,money is light,for currency,divesible,to show differ money,somepeople us card,we need money alot,check,becuse you could,you can trade money,to make barter,because you could,to trade,cared card,are money replaced,we need oil,to pay for a trade,they are use as,