Solar system: Did you mean...?

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...

The Antikythera mechanism (also known as the Antikythera Device), dated to the late 2nd century/early 1st century BCE (roughly 205-60 BCE) is understood as the world's first analog computer, created to accurately calculate the position of...

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...

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 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...

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...

The Haudenosaunee, also known as the Iroquois Confederacy, Iroquois Five Nations, or the Iroquois League, was one of the most powerful Native American polities north of the Rio Grande. They arrived in the historical record in the 16th-century...

The New Fire Ceremony, also known as the Binding of the Years Ceremony, was a ritual held every 52 years in the month of November on the completion of a full cycle of the Aztec solar year (xiuhmopilli). The purpose of it was none other than...

The Junkers Ju 88 was a two-engined medium bomber plane used by the German Air Force (Luftwaffe) throughout the Second World War (1939-45). Ju 88s were involved in the Battle of Britain and London Blitz as bombers, but this versatile aircraft...