What is the Coase Theorem? Please explain why it was developed and what are the key elements of the theorem

The Coase Theorem says that, in an economic transaction with externalities, if property rights are well defined and if the transaction costs are low enough, then the private solution is socially optimal, with no need for government intervention to correct the situation externality, which is a market failure. The government's only role would be to ensure that property rights are well defined and that free trade flows without transaction costs.

Coase's theorem, shows how the role of institutions, especially legal ones, are important for the proper functioning of the market economy.

question - in 1827, john walker, a druggist in a small english town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. the druggist had discovered the first friction-chemical match, the kind we use to-day. it is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. although walker's match did not require the bottle of acid, nevertheless it was not a good one. it could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. in a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. the match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. it would ignite when rubbed on any dry surface, and there was no longer any sputtering. this was the phosphorus match, the match with which we are so familiar. according the paragraph what was the benefit of the new phosphorus match? it burst into flame when rubbed on sandpaper. it was made by mixing chemicals. it could be ignited on any dry surface. it threw fire in all directions.

answer - matches required natural chemicals