Columbia Encyclopedia

(Encyclopedia) Frederick II, 1194–1250, Holy Roman emperor (1220–50) and German king (1212–20), king of Sicily (1197–1250), and king of Jerusalem (1229–50), son of Holy Roman Emperor Henry VI and of Consta...

(Encyclopedia) mathematics, deductive study of numbers, geometry, and various abstract constructs, or structures; the latter often “abstract” the features common to several models derived from the empirical, or ...

(Encyclopedia)  CE5 Gabon gäbôNˈ [key], officially Gabonese Republic, republic (2015 est. pop. 1,930,000), 103,346 sq mi (267,667 sq km), W central Africa. It borders on the Atlantic Ocean in the west, on Equat...

(Encyclopedia) World War II, 1939–45, worldwide conflict involving every major power in the world. The two sides were generally known as the Allies and the Axis. Although hostilities came to an end in Sept...

(Encyclopedia) Jerusalem jəro͞oˈsələm, –zələm [key], Heb. Yerushalayim, Arab. Al Quds, city (1994 pop. 578,800), capital of Israel. East Jerusalem is also claimed by Palestinians as a future capital, and mo...

(Encyclopedia)  CE5 Somalia sōmäˈleə [key], officially Federal Republic of Somalia, country (2015 est. pop. 10,616,000), 246,200 sq mi (637,657 sq km), extreme E Africa. It is directly south of the Arabian pen...

(Encyclopedia)  CE5 Lebanon lĕbˈənən, –nŏnˌ [key], officially Lebanese Republic, republic (2015 est. pop. 5,851,000), 4,015 sq mi (10,400 sq km), SW Asia. The country is bordered on the west by the Mediter...

(Encyclopedia)  CE5 Afghanistan ăfgănˈĭstănˌ, ăfgänˌĭstänˈ [key], officially Islamic Republic of Afghanistan, republic (2020 est. pop. 38,930,000), 249,999 sq mi (6...

(Encyclopedia)  CE5 Peru pāro͞oˈ [key], officially Republic of Peru, republic (2015 est. pop. 31,377,000), 496,220 sq mi (1,285,210 sq km), W South America. It borders on the Pacific Ocean in the west, on Ecuad...

(Encyclopedia)  CE5 Sudan so͞odănˈ [key], officially Republic of the Sudan, republic (2015 est. pop. 38,648,000), 718,723 sq mi (1,861,484 sq km), NE Africa. It borders on Egypt in the north, on the Red Sea in ...