1. Protocol: A protocol is an agreement that diplomatic negotiators formulate and sign as the basis for a final agreement or treaty. The contract itself can only be concluded in many years. Prior to 1871, the U.S. government regularly entered into contracts with Native Americans, but the Indian Appropriations Act of March 3, 1871 (chap. 120, 16 Stat. 563) had accompanied a horseman (25 U.S.C. § 71) who effectively terminated the presidential convention by providing that no Indian nation or tribe could be recognized as an independent nation. Tribe or power with which the United States may enter into contracts. After 1871, the federal government pursued similar contractual relations with Indian tribes through agreements, statutes, and implementing regulations.
 In international law and international relations, a protocol is generally an international treaty or agreement that complements an earlier treaty or international agreement. A protocol may amend the previous contract or add additional provisions. The parties to the previous agreement are not obliged to adopt the protocol. This is sometimes clearer by referring to it as an „optional protocol“, especially when many parties to the first agreement do not support the protocol. B. Does not describe the national laws applicable to these agreements. A protocol is used to amend an IMO convention when treaties, protocols and conventions are terms that are often heard when it comes to global and UN diplomacy. Although treaties, pacts and agreements have been part of the world since the beginning of civilizations, they have become more common in today`s world. The terms are often confusing, as they are used in a similar environment. However, they are different from each other.
A treaty is a formal and binding written agreement concluded by actors of international law, usually sovereign states and international organizations, but also individuals and other actors.  A treaty may also be designated, inter alia, as an international agreement, protocol, pact, convention, pact or exchange of letters. Regardless of the terminology, only instruments binding on the parties are considered treaties under international law.  A treaty is legally binding. Australian contracts generally fall into the following categories: extradition, postal agreements and payment vouchers, trade and international conventions. There are several reasons why an otherwise valid and agreed treaty can be rejected as a binding international agreement, most of which raise problems related to the constitution of the treaty. [Citation required] For example, the Japanese-Korean series treaties of 1905, 1907 and 1910 were protested;  and the 1965 Treaty on Fundamental Relations between Japan and the Republic of Korea confirmed them as „already null and void.“  Conventions and conventions that were launched for signature between 1949 and 2003 were published in the European Treaty Series (including Sev Nos. 1 to 193). Since 2004, this series has been continued by the Council of Europe Treaty Series (SES No.
194 et seq.). The only difference between „conventions“ and „agreements“ is the form in which a State can express its consent to the link. Agreements may be signed with or without reservation as to ratification, acceptance or approval. Conventions can in principle be ratified. See the clauses for the standard conclusion of conventions and agreements concluded within the Council of Europe. 2.4 What is the difference between a protocol, a treaty and a convention? (2) Treaty: a treaty is an agreement by which the parties negotiate in order to find common ground and avoid new conflicts or differences of opinion. It is normally ratified by the legislative authority of the Government whose representative he has signed. In the United States, the Senate must ratify all treaties. An international agreement between two parties, members or even nations….