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A city-state is an independent sovereign city which serves as the center of political, economic, and cultural life over its contiguous territory. They have existed in many parts of the world since the dawn of history, including cities such as Rome , Carthage , Athens and Sparta and the Italian city-states during the Middle Ages and Renaissance , such as Florence , Venice , Genoa and Milan .
The United Nations headquarters has been situated along the East River in Midtown Manhattan since 1952; in 1945, the United States was a founding member of the UN. The United States has an established structure of foreign relations, and it has the world's second-largest diplomatic corps as of 2024.
A city and county that share a name may be completely unrelated in geography. For example, Richmond County is nowhere near the City of Richmond, and Franklin County is even farther from the City of Franklin. More Virginia counties are named for women than in any other state. Virginia's postal abbreviation is VA and its FIPS state code is 51.
A map of the United States showing its 50 states, federal district and five inhabited territories. Alaska, Hawaii, and the territories are shown at different scales, and the Aleutian Islands and the uninhabited northwestern Hawaiian Islands are omitted from this map. This article is part of a series on.
The 205 listed states can be divided into three categories based on membership within the United Nations System: 193 UN member states, [1] 2 UN General Assembly non-member observer states, and 10 other states. The sovereignty dispute column indicates states having undisputed sovereignty (188 states, of which there are 187 UN member states and 1 ...
The Constitution of the United States is the supreme law of the United States. [3] It superseded the Articles of Confederation, the nation's first constitution, on March 4, 1789. Originally including seven articles, the Constitution delineates the national frame and constrains the powers of the federal government.
