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1) The curtate future lifetime , denoted K (x) {\displaystyle K(x)} , is a discrete random variable representing the remaining lifetime at age x {\displaystyle x} , rounded down to whole years. Life expectancy, more technically called the curtate expected lifetime and denoted e x {\displaystyle \,e_{x}\!} , [a] is the mean of K (x) {\displaystyle K(x)} —that is to say, the expected number of ...
1st century AD: The first use of respiratory protective equipment is documented by Pliny the Elder (c. 23 AD –79) using animal bladder skins to protect workers in Roman mines from red lead oxide dust. 1st century AD: Vending machines invented by Hero of Alexandria. By the 1st century AD: The double-entry bookkeeping system in the Roman Empire.
Cahokia winter solstice sunrise over Fox Mound and the Cahokia Woodhenge ca. 1000 AD. Artist's concept. The Cahokia Mounds State Historic Site / k ə ˈ h oʊ k i ə / is the site of a pre-Columbian Native American city (which existed c. 1050–1350 CE) directly across the Mississippi River from present-day St. Louis, Missouri.
Glyndŵr's great seal. The Glyndŵr rebellion was a Welsh rebellion led by Owain Glyndŵr against the Kingdom of England during the Late Middle Ages.During the rebellion's height between 1403 and 1406, Owain exercised control over the majority of Wales after capturing several of the most powerful English castles in the country, and formed a national parliament at Machynlleth.
See also List of state leaders in the 14th-century Holy Roman Empire#Italy. Kingdom of Italy (Holy Roman Empire) (complete list) – Henry VII, King (1311–1313) Louis IV, King (1327–1347) Charles IV, King (1355–1378) Margraviate of Modena, Reggio, and Ferrara (complete list) – Azzo VIII, Marquis of Reggio (1293–1306), of Ferrara (1293 ...
1403. February 7 – King Henry IV of England marries Joanna of Navarre. Henry 'Hotspur' Percy forms an alliance with Welsh rebel Owain Glyndŵr. July 21 – Battle of Shrewsbury: King Henry IV of England defeats a rebel army led by "Hotspur" Percy. Percy is killed in the battle by an arrow in his face.
To this day, The Rule of St. Benedict is the most common and influential Rule used by monasteries and monks, more than 1,400 years after its writing. A basilica was built upon the birthplace of Benedict and Scholastica in the 1400s. Ruins of their familial home were excavated from beneath the church and preserved.
