They tracked a solar year of 365 days and one of the few surviving ancient Maya books contains tables of eclipses. Without the use of the cartwheel or metal tools, they built massive stone structures. President Abraham Lincoln signed the bill into law.Į.
In May 1864, Conness introduced legislation to bring the Yosemite Valley under the control of the state of California. But Pasteur extended this theory to explain the causes of many diseases - including cholera, ТВ and smallpox - and their prevention by vaccination.ĭ.ğrederick Law Olmsted, the architect who designed New York City's Central Park, called the Yosemite Valley «the greatest glory of nature.» Californians convinced one of their representatives, Senator John Conness, to do something about its protection. Many felt that such tiny organisms as germs could not possibly kill larger ones such as humans. Louis Pasteur's various investigations convinced him of the Tightness of his germ theory of disease, which holds that germs attack the body from outside.
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It was the time when David Livingstone became convinced of his mission to reach new peoples in Africa and introduce them to Christianity, as well as free them from slavery.Ĭ. Vast portions of the globe, such as the interior of Africa, were mapped by explorers and adventurers.
The 19th century was a remarkable time for exploration. But the exotic plants and animals he encountered challenged his thinking and led him to consider scientific evidence in new ways.ī. Darwin didn't actually formulate his theory of evolution while sailing around the world aboard the Royal Navy ship.
Beagle has become legendary and greatly influenced his masterwork, the book, On the Origin of Species.
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