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Medici, Italian family

(Encyclopedia)Medici mĕˈdĭchē, Ital. māˈdēchē [key], Italian family that directed the destinies of Florence from the 15th cent. until 1737. Of obscure origin, they rose to immense wealth as merchants and ba...

gamma-ray astronomy

(Encyclopedia)gamma-ray astronomy, study of astronomical objects by analysis of the most energetic electromagnetic radiation they emit. Gamma rays are shorter in wavelength and hence more energetic than X rays (see...

espionage

(Encyclopedia)espionage ĕsˈpēənäzhˌ [key], the act of obtaining information clandestinely. The term applies particularly to the act of collecting military, industrial, and political data about one nation for ...

Dynasties of Ancient Egypt (table)

(Encyclopedia)Dynasties of Ancient Egypt Old Kingdom (or Old Empire) First Intermediate Period Middle Kingdom (or Middle Empire) Second Intermediate Period New Kingdom (or New Empire) ...

Enlightenment

(Encyclopedia)Enlightenment, term applied to the mainstream of thought of 18th-century Europe and America. Centered in Paris, the movement gained international character at cosmopolitan salons. Masonic lodges pla...

Middle Ages

(Encyclopedia)Middle Ages, period in Western European history that followed the disintegration of the West Roman Empire in the 4th and 5th cent. and lasted into the 15th cent., i.e., into the period of the Renaissa...

monasticism

(Encyclopedia)monasticism mənăsˈtĭsĭzəm, mō– [key], form of religious life, usually conducted in a community under a common rule. Monastic life is bound by ascetical practices expressed typically in the vo...

Christianity

(Encyclopedia)Christianity, religion founded in Palestine by the followers of Jesus. One of the world's major religions, it predominates in Europe and the Americas, where it has been a powerful historical force and...

American Revolution

(Encyclopedia)American Revolution, 1775–83, struggle by which the Thirteen Colonies on the Atlantic seaboard of North America won independence from Great Britain and became the United States. It is also called th...

fascism

(Encyclopedia)fascism făshˈĭzəm [key], totalitarian philosophy of government that glorifies the state and nation and assigns to the state control over every aspect of national life. The name was first used by t...