September 28, 1945 celebrated the time the United States tried to utilize marine resources such as oil and gas. President Truman issued a statement supporting domestic exploration and mining of these minerals according to US policy (Frazier 2009, p. 3). The Truman Declaration has tightly integrated the distinction between the legal system of fisheries resources outside the territorial waters and the management system of mineral resources. Regarding the legal concept of the continental shelf, its main features have been confirmed as a natural extension of the territory area (Currie, Forces & Oosterveld 2007, p. 403).
Moved by the tremendous technological progress of the Second World War, President of the United States Harry Duluman announced a declaration claiming to be the jurisdiction of all the "underlying soil and undersea natural resources" of the continental shelf. By doing so, he redefines the concept of the sovereignty of the high seas - previously it was understood to be 3 nautical miles from the coast. The UN General Assembly ratified the Continental Treaty on the Continental Shelf, which summarizes Truman's claims on international law. This treaty was later ratified by all Arctic countries except Iceland and was given sovereignty over continental shelf resources to a depth of 200 meters or to the depth of the development of technically feasible natural resources.
In the past 30 years, we have seen the development of industrial technology to some extent, relations between countries are also affected. Indeed, the growth of international technology belongs to the scope of international law. This is reflected in the development of continental shelf theory. In 1945, the Truman Declaration on the continental shelf was the result of the President's perception of huge energy resources on the coast of North America. This unilateral declaration claims to have the right to use these resources outside the territorial waters of the United States. This has led to adopt a similar attitude to other states, which may change the law and even regenerate the law. Next is the first United Nations Maritime Law Conference adopting the Continental Shelf Treaty.
Hostility between Germany and Italy ended in May 1945 and ended in August. Foreign enemies and American citizens continue to be detained. On July 14, 1945, President Harry Truman announced Presidential Decree No. 2655 "Banishment of Foreigners". This announcement gives the Attorney General the power of foreign enemies in the mainland of the United States, decides whether they "harm public peace and security in the United States", orders them to eliminate them, Establish rules to regulate. This announcement cites the revised Aliens hostility law on presidential power (50 USC 21 - 24) and the "hostile nation's subject" is publicly declared to be over the age of 14 and present in the US, There is no naturalization and it is deleted. They act as enemies of aliens and decide the means of removal