The English word slave comes from Old French sclave, from the Medieval Latin sclavus, from the Byzantine Greek σκλ?βο?, which, in turn, comes from the ethnonym Slav, because in some early media ...
Mit'a was effectively a form of tribute to the Inca government in the form of labor, i.e. a corvée. In the Incan Empire, public service was required in community-driven projects such as the building ...
The etymology of encomienda and encomendero lies in the Spanish verb encomendar, "to entrust". The encomienda was based on the Reconquista institution in which adelantados were given the right to extr ...
Epidemic typhus Back painDeliriumHigh fever (40 °C or 104 °F)Joint painLow blood pressurePhotophobia (sensitivity to light)RashesSevere headachesSevere muscle painsMass grave of typhus victims in Be ...
In 2007, a large outbreak in Japan caused a number of universities and other institutions to close in an attempt to contain the disease.Many children in ultra-Orthodox Jewish communities were affected ...
The classic signs and symptoms of measles include four-day fevers and the three Cs—cough, coryza (head cold), and conjunctivitis (red eyes)—along with fever and rashes. The fever may reach up to 40 ...
Reasonably effective ways to reduce the transmission of influenza include good personal health and hygiene habits such as: not touching your eyes, nose or mouth; frequent hand washing (with soap and w ...
Approximately 33% of people with influenza are asymptomatic.Symptoms of influenza can start quite suddenly one to two days after infection. Usually the first symptoms are chills or a chilly sensation, ...
Isabella was named heir to the throne of Castile by her half brother Henry IV of Castile in the Treaty of the Bulls of Guisando. She became Queen of Castile in 1474. Her niece, Joanna of Castile, atte ...
Venezuela is among the most urbanized countries in Latin America; the vast majority of Venezuelans live in the cities of the north, especially in the capital Caracas, which is also the largest city. A ...
Venezuela (Listeni/?v?n??zwe?l?/ ven-?-zwayl-?, Spanish pronunciation: ), officially called the Bolivarian Republic of Venezuela (Spanish: República Bolivariana de Venezuela ), is a country o ...
The Gulf of Paria (Golfo de Paria in Spanish) is a 7,800 km2 (3,000 sq mi) shallow inland sea between the island of Trinidad (Republic of Trinidad and Tobago) and the east coast of Venezuela. This she ...
The Orinoco Delta is a vast river delta of the Orinoco River, located in eastern Venezuela.The Orinoco Delta is fan-shaped, formed by the Orinoco River as it splits into numerous distributaries, calle ...
Based on the Treaty of Tordesillas, the Portuguese Crown claimed it had territorial rights in the area visited by John Cabot in 1497 and 1498. To that end, in 1499 and 1500, the Portuguese mariner Jo ...
The measurement of longitude is important both to cartography and for ocean navigation. Mariners and explorers for most of history struggled to determine longitude. Finding a method of determining lon ...
