Columbia Encyclopedia

(Encyclopedia) Mahmud II, 1784–1839, Ottoman sultan (1808–39), younger son of Abd al-Hamid I. He was raised to the throne of the Ottoman Empire (Turkey) upon the deposition of his brother, Mustafa IV, and contin...

(Encyclopedia) nationalization, acquisition and operation by a country of business enterprises formerly owned and operated by private individuals or corporations. State or local authorities have traditionally taken ...

(Encyclopedia) ozone layer or ozonosphere, region of the stratosphere containing relatively high concentrations of ozone, located at altitudes of 12–30 mi (19–48 km) above the earth's surface. Ozone in the ozone...

(Encyclopedia) maritime law, system of law concerning navigation and overseas commerce. Because ships sail from nation to nation over seas no nation owns, nations need to seek agreement over customs related to shipp...

(Encyclopedia) Cavour, Camillo Benso, conte di kämēlˈlō bānˈsō kônˈtā dē kävo͞orˈ [key], 1810–61, Italian statesman, premier (1852–59, 1860–61) of the Kingdom of Sardinia. The active force behind...

(Encyclopedia) convention, in U.S. politics, a gathering of delegates to nominate candidates for elective office and to formulate party policy. They are held at the national, state, and local levels. State convent...

(Encyclopedia) Katanga kätăngˈgə, kə– [key], former province, c.200,000 sq mi (518,000 sq km), SE Congo (Kinshasa); called Shaba from 1971 to 1997. Katanga bordered Angola on the southwest, Zambia on the sout...

(Encyclopedia) Trieste trēĕˈstā [key], Serbo-Croatian Trst, city (1991 pop. 231,100), capital of Friuli–Venezia Giulia and of Trieste prov., extreme NE Italy, on the Gulf of Trieste (at the head of the Adriati...

(Encyclopedia) trusteeship, territorial, system of UN control for territories that were not self-governing. It replaced the mandates of the League of Nations. Provided for under chapters 12 and 13 of the Charter of ...

(Encyclopedia) Umayyad o͞omäˈyäd [key], the first Islamic dynasty (661–750). Their reign witnessed the return to leadership roles of the pre-Islamic Arab elite, and the rejuvenation of tribal loyalties. The Ba...