Contracts can be bilateral or unilateral. A bilateral treaty is an agreement by which each party makes a promise or a number of commitments. For example, in a contract for the sale of a home that promises the buyer to pay the seller $200,000 in exchange for the seller`s commitment to deliver the property of the property. These joint contracts take place in the daily flow of commercial transactions and, in cases where demanding or costly precedent requirements are requirements that must be met in order for the treaty to be respected. The common law doctrine of treaty practice provides that only contracting parties can be sued or prosecuted.   The main case of Tweddle v Atkinson   immediately demonstrated that the doctrine stood firm for the parties. In the law of the sea, the cases of Scruttons v Midland Silicones   and N.Z. Shipping v Satterthwaite   determined how third parties could obtain protection of the restriction clauses in the same bill of lading. Some common law exceptions, such as agency, surrender and negligence, have circumvented some privity rules, but the unpopular doctrine  remained intact until it was amended by the Contracts of Third Parties Act of 1999, which provides: Although the European Union is in principle an economic community with a number of trade rules , there is no `EU treaty law`. In 1993, Harvey McGregor, a British lawyer and academic, developed a „contract code“ under the auspices of the English and Scottish Law Commissions, which was a proposal to encrypt and codify the contractual laws of England and Scotland. This document has been proposed as a `treaty code for Europe`, but tensions between English and German lawyers have led to the failure of this proposal so far.
 The main advantage of an agreement that does not meet the criteria of a contract is that it is by nature informal. If contractors have a long-standing relationship and share a considerable degree of trust, the application of a contract can save time and flexibility in fulfilling agreed commitments. Agreements that do not contain all the necessary elements of the contract may also be more feasible in situations where contracting would impose a prohibitive burden on the parties concerned. In Anglo-American common law, the formation of a contract generally requires an offer, acceptance, consideration and mutual intent that must be linked. Each party must be the one that is binding by the treaty.  Although most oral contracts are binding, some types of contracts may require formalities such as written formalities or acts of theft.  In England, some contracts (insurance and partnerships) require the utmost good faith, while others may require good faith (employment contracts and agency). Most English treaties do not need good faith, provided the law is respected. However, there is a global concept of „legitimate trust.“ Common examples of contracts are confidentiality agreements, end-user licensing agreements (although both known as „agreements“), employment contracts and accepted orders. No matter how it is designated, as long as an agreement contains the necessary elements of a contract listed above, a court may impose it as such. However, it is important to take into account, in the context of the contract, and not as in the past. For example, in the first English case of Eastwood v.
Kenyon , the guardian of a young girl, took out a loan to educate her. After her marriage, her husband promised to pay off the debts, but the loan was considered a historical value. The inadequacy of previous considerations is related to the existing customs rule. In the first English case of Stilk v. Myrick , a captain promised to divide the salaries of two deserters among the rest of the crew if they agreed to set sail; However, this promise was found to be unenforceable, as the crew was already in charge of the ship`s navigation.