科斯论市场(续2) o The provision of markets is an entrepreneurial activity and has a long history. They not only provided the physical facilities for the fair or market but were also responsible for security. For their operation, markets. require more than the provision of physical facilities in which buying and selling can take place. They also require the establishment of legal rules governing the rights and duties of those carrying out transactions in these facilities 2003/4/10 浙大2003:第6章市场 72003/4/10 浙大2003：第6章市场 7 科斯论市场（续2） The provision of markets is an entrepreneurial activity and has a long history. They not only provided the physical facilities for the fair or market but were also responsible for security. For their operation, markets…require more than the provision of physical facilities in which buying and selling can take place. They also require the establishment of legal rules governing the rights and duties of those carrying out transactions in these facilities