Attempts have been made to develop the purpose and nature of the treatise as a phenomenon of global understanding, in particular the relational theory of contracts, originally developed by American scientists Ian Roderick Macneil and Stewart Macaulay, which was based, at least in part, on the theory of contracts of the American scientist Lon L. Fuller, while American scientists have been at the forefront of developing theories of economic contracts, which have focused on issues relating to transaction costs and the so-called “Efficient Breach” theory. To enter into an agreement; negotiators from the United Kingdom and the United States are on the verge of reaching an agreement; He nodded favorably. When a contract is written and someone signs it, the signatory is generally bound by its terms, whether he has actually read it [41][42], provided that the document is of a contractual nature. [52] However, affirmative defences, such as coercion or scruples, may allow the signatory to evade the obligation. In addition, the contractual conditions must be duly communicated to the other party before the conclusion of his contract. [53] [54] Both a concrete performance order and an injunction are discretionary measures that are largely based on fairness. . . .