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Hace 4 días · The peopling of the Americas began when Paleolithic hunter-gatherers ... Academics generally believe that humans reached North America south of the Laurentide Ice Sheet at some point between 15,000 and 20,000 years ago. ... Eustatic sea level rise caused flooding, which accelerated as the rate grew more rapid.
Hace 5 días · Benjamin Franklin, in Observations Concerning the Increase of Mankind, Peopling of Countries, etc., complained about the increasing influx of German Americans, stating that they had a negative influence on American society.
Hace 2 días · global warming, the phenomenon of increasing average air temperatures near the surface of Earth over the past one to two centuries. Climate scientists have since the mid-20th century gathered detailed observations of various weather phenomena (such as temperatures, precipitation , and storms) and of related influences on climate ...
Hace 5 días · History. Public Law 95-260 was passed by Congress in 1978 to create a memorial to the signers of the Declaration of Independence. The memorial is a gift from the American Revolution Bicentennial Administration and consists of 56 stone blocks, each with a facsimile of the signer's actual signature, his occupation, and his home town. It was dedicated on July 4, 1984, exactly 208 years after the ...
Hace 2 días · Humans change their environment both positively and negatively and the environment affects how humans live in many different ways. The main interactions between humans and our environment can be grouped into the use of resources and the production of wastes.
Hace 4 días · The Anthropocene ( / ˈænθrəpəˌsiːn, ænˈθrɒpə -/ [1] [2] [3]) is the common name for a proposed geological epoch, dating from the commencement of significant human impact on Earth up to the present day. It affects Earth's geology, landscape, limnology, ecosystems and climate.
Hace 6 días · Picture Words; History of the U.S. Civil War.Full-size image 288 x 400 (101k) This image, from the Library of Congress, Visual Memory Project, History of the Civil War in the United States, 1860-1865 shows the progress of the war, with a time scale in months, and principal battles, troop movements, etc, using "Scaife's comparative and synoptical system of history applied to all countries."
