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Samurai
The samurai (also bushi) were a class of warriors that arose in the 10th century in Japan and which performed military service until the 19th century. Elite and highly-trained soldiers adept at using both the bow and sword, the samurai were...

Definition
Ancient Greek Warfare
In the ancient Greek world, warfare was seen as a necessary evil of the human condition. Whether it be small frontier skirmishes between neighbouring city-states, lengthy city-sieges, civil wars, or large-scale battles between multi-alliance...

Definition
Old Kingdom of Egypt
The Old Kingdom of Egypt (c. 2613-2181 BCE) is also known as the 'Age of the Pyramids' or 'Age of the Pyramid Builders' as it includes the great 4th Dynasty when King Sneferu perfected the art of pyramid building and the pyramids of Giza...

Definition
Galileo Galilei
Galileo Galilei (1564-1642) was an Italian mathematician, physicist, astronomer, and natural philosopher. He created a superior telescope with which he made new observations of the night sky, notably that the surface of the Moon has mountains...

Definition
Xerxes I
Xerxes I (l. 519-465, r. 486-465 BCE), also known as Xerxes the Great, was the king of the Persian Achaemenid Empire. His official title was Shahanshah which, though usually translated as `emperor', actually means `king of kings'. He is identified...

Definition
Hoplite - The Key Infantry Soldier of Ancient Greece
A hoplite (from ta hopla meaning tool or equipment) was the most common type of heavily armed foot-soldier in ancient Greece from the 7th to 4th centuries BCE, and most ordinary citizens of Greek city-states with sufficient means were expected...

Definition
Ancient Persian Warfare
The ancient Persian military evolved from the earlier armed forces of the Medes which, in turn, developed from the warrior class of the indigenous people of the Iranian Plateau, the Aryan migrants (including the Persians) who later settled...

Definition
Electrical Telegraph
The electrical telegraph was invented in 1837 by William Fothergill Cook (1806-1879) and Charles Wheatstone (1802-1875) in England with parallel innovations being made by Samuel Morse (1791-1872) in the United States. The telegraph, once...

Definition
Supermarine Spitfire
The Supermarine Spitfire was a single-seater fighter plane, one of the most important aircraft of the Second World War (1939-45). Employed by the Royal Air Force in such crucial encounters as the Battle of Britain in the summer of 1940, the...

Definition
Roman Philosophy
Roman philosophy played a significant role in the growth and development of Western thought. While not involved directly in the development of original philosophical thought, Rome made significant contributions in two ways: by conveying Greek...