Question

How have markets ,and the methods of exchange,changed over time?

Answer 1

in ancient times people used to use batter system for the exchange of goods then they started using cash and nowadays online transition is prefered

Answer 2

earlier when money was not used as a method of exchange people used to exchange different products as per their needs.this situation was called double coincidence of wants and also was called bartar system.however this method of exchange was not suitable for markets and created many problems .this marked the beginning of use of currency or money as a medium of exchange .this type of exchange was hence suitable acceptable and accountable method of medium of exchange.