Caste System: Did you mean...?

The Heinkel He 111 was a medium two-engined bomber plane used by the German Air Force (Luftwaffe) during the Second World War (1939-45). Heinkel He 111s contributed significantly to such campaigns as the Battle of France, the Battle of Britain...

King Sejong the Great (15 May 1397 to 8 April 1450 CE) ruled Korea from 1418 to 1450 CE as the fourth king of the Joseon Dynasty (also spelled Choson). One of only two Korean kings called 'the Great' today, Sejong had a major impact on Korea...

Siddhartha Gautama (better known as the Buddha, l. c. 563 - c. 483 BCE) was, according to legend, a Hindu prince who renounced his position and wealth to seek enlightenment as a spiritual ascetic, attained his goal and, in preaching his path...

The Shishunaga Dynasty (also Sishunaga/Shaishunaga Dynasty) ruled the Magadha Kingdom in ancient India from c. 413 BCE to c. 345 BCE (in some sources from 421 BCE). It is said to be the third imperial dynasty of Magadha after the Brihadratha...

Ptolemaic Egypt rapidly established itself as an economic powerhouse of the ancient world at the end of the 4th century BCE. The wealth of Egypt was owed in large part to the unrivalled fertility of the Nile, which served as the breadbasket...

Civilization (from the Latin civis=citizen and civitas=city) is a term applied to any society which has developed a writing system, government, production of surplus food, division of labor, and urbanization. The term is difficult to define...

Catherine II of Russia (Catherine the Great) was empress regent of Russia from 1762-1796. She was born in Prussia to Prince Christian August of Anhalt-Zerbst (1690-1747) and Princess Johanna Elisabeth of Holstein-Gottorp (1712-1760), and...

The U-boat, short for Unterseeboot (undersea boat), was the name for submarines used by the German Navy during the First World War (1914-18) and Second World War (1939-45). In the two Battles of the Atlantic, U-boats sank thousands of ships...

Writing is the physical manifestation of a spoken language. It is thought that human beings developed language c. 35,000 BCE as evidenced by cave paintings from the period of the Cro-Magnon Man (c. 50,000-30,000 BCE) which appear to express...

The government of ancient Persia was based on an efficient bureaucracy which combined the centralization of power with the decentralization of administration. The Achaemenid Empire (c. 550-330 BCE) founded by Cyrus the Great (r. c. 550-530...