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Hace 4 días · First practical means of collecting energy from the Sun and turning it into a current of electricity. 1955: The hovercraft is patented by Christopher Cockerell. 1955: The intermodal container is developed by Malcom McLean. 1957: The laser and optical amplifier are invented and named by Gordon Gould and Charles Townes.
Hace 2 días · The history of Hinduism covers a wide variety of related religious traditions native to the Indian subcontinent. [1] It overlaps or coincides with the development of religion in the Indian subcontinent since the Iron Age, with some of its traditions tracing back to prehistoric religions such as those of the Bronze Age Indus Valley Civilisation.
Hace 4 días · By nearly every metric, the Vietnam War was, in the common sense of the word, a war. The United States committed some 550,000 troops to the Vietnam front at the height of the conflict, suffered more than 58,000 casualties, and engaged in battle after battle with communist forces in the region until its withdrawal in 1973.
Hace 1 día · The United States is the world’s greatest economic power, measured in terms of gross domestic product (GDP). The nation’s wealth is partly a reflection of its rich natural resources and its enormous agricultural output, but it owes more to the country’s highly developed industry.
Hace 5 días · Ethiopia, landlocked country on the Horn of Africa. The country lies completely within the tropical latitudes and is relatively compact, with similar north-south and east-west dimensions. The capital is Addis Ababa (“New Flower”), located almost at the centre of the country. Ethiopia is the largest and most populated country in the Horn of ...
Hace 3 días · history of the Philippines, a survey of notable events and people in the history of the Philippines. The Philippines takes its name from Philip II, who was king of Spain during the Spanish colonization of the islands in the 16th century. Because it was under Spanish rule for 333 years and under U.S. tutelage for a further 48 years, the ...
Hace 2 días · During the 1983–2005 Second Sudanese Civil War, people were taken into slavery. [12] Evidence emerged in the late 1990s of systematic child slavery and trafficking on cacao plantations in West Africa. [13] Slavery in the 21st century continues and generates an estimated $150 billion in annual profits. [14]
