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submarine

(Encyclopedia)submarine, naval craft capable of operating for an extended period of time underwater. Submarines are almost always warships, although a few are used for scientific, business, or other purposes (see a...

Cape Verde

(Encyclopedia)CE5 Cape Verde vûd [key], Port. Cabo Verde, officially Republic of Cape Verde, republic (...

relativity

(Encyclopedia)relativity, physical theory, introduced by Albert Einstein, that discards the concept of absolute motion and instead treats only relative motion between two systems or frames of reference. One consequ...

World War I

(Encyclopedia)World War I, 1914–18, also known as the Great War, conflict, chiefly in Europe, among most of the great Western powers. It was the largest war the world had yet seen. World War I and the resul...

Charles I, king of England, Scotland, and Ireland

(Encyclopedia)Charles I, 1600–1649, king of England, Scotland, and Ireland (1625–49), second son of James I and Anne of Denmark. There were no decisive victories in the civil war until Charles was defeated at...

Panama Canal

(Encyclopedia)Panama Canal, waterway across the Isthmus of Panama, connecting the Atlantic (by way of the Caribbean Sea) and Pacific oceans, built by the United States (1904–14, on territory leased from the repub...

United Arab Emirates

(Encyclopedia)CE5 United Arab Emirates, federation of sheikhdoms (2015 est. pop. 5,780,000), c.30,000 sq mi (77,700 sq km), SE Arabia, on the Persian Gulf and the Gulf of Oman. The federation, commonly known as ...

piracy

(Encyclopedia)piracy, robbery committed or attempted on the high seas. It is distinguished from privateering in that the pirate holds no commission from and receives the protection of no nation but usually attacks ...

Michigan

(Encyclopedia)CE5 Michigan mĭshˈĭgən [key], upper midwestern state of the United States. It consists of two peninsulas thrusting into the Great Lakes and has borders with Ohio and Indiana (S), Wisconsin (W),...

Portugal

(Encyclopedia)CE5 Portugal pôrˈchəgəl [key], officially Portuguese Republic, republic (2015 est. pop. 10,418,000), 35,553 sq mi (92,082 sq km), SW Europe, on the western side of the Iberian Peninsula and inc...