Portal:North America
The North America Portal
North America is a continent in the Northern and Western Hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Caribbean Sea, and to the west and south by the Pacific Ocean. The region includes the Bahamas, Bermuda, Canada, the Caribbean, Central America, Clipperton Island, Greenland, Mexico, Saint Pierre and Miquelon, Turks and Caicos Islands, and the United States.
North America covers an area of about 24,709,000 square kilometers (9,540,000 square miles), representing approximately 16.5% of the Earth's land area and 4.8% of its total surface area. It is the third-largest continent by size after Asia and Africa, and the fourth-largest continent by population after Asia, Africa, and Europe. , North America's population was estimated as over 592 million people in 23 independent states, or about 7.5% of the world's population. In human geography, the terms "North America" and "North American" sometimes refer to just Canada, the United States, Mexico, and Greenland.
It is unknown with certainty how and when first human populations first reached North America. People were known to live in the Americas at least 20,000 years ago, but various evidence points to possibly earlier dates. The Paleo-Indian period in North America followed the Last Glacial Period, and lasted until about 10,000 years ago when the Archaic period began. The classic stage followed the Archaic period, and lasted from approximately the 6th to 13th centuries. Beginning in 1000 AD, the Norse were the first Europeans to begin exploring and ultimately colonizing areas of North America.
In 1492, the exploratory voyages of Christopher Columbus led to a transatlantic exchange, including migrations of European settlers during the Age of Discovery and the early modern period. Present-day cultural and ethnic patterns reflect interactions between European colonists, indigenous peoples, enslaved Africans, immigrants from Europe, Asia, and descendants of these respective groups. (Full article...)
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The Mount Cayley volcanic field (MCVF) is a remote volcanic zone on the South Coast of British Columbia, Canada, stretching 31 km (19 mi) from the Pemberton Icefield to the Squamish River. It forms a segment of the Garibaldi Volcanic Belt, the Canadian portion of the Cascade Volcanic Arc, which extends from Northern California to southwestern British Columbia. Most of the MCVF volcanoes were formed during periods of volcanism under sheets of glacial ice throughout the last glacial period. These subglacial eruptions formed steep, flat-topped volcanoes and subglacial lava domes, most of which have been entirely exposed by deglaciation. However, at least two volcanoes predate the last glacial period and both are highly eroded. The field gets its name from Mount Cayley, a volcanic peak located at the southern end of the Powder Mountain Icefield. This icefield covers much of the central portion of the volcanic field and is one of the several glacial fields in the Pacific Ranges of the Coast Mountains.
Eruptions along the length of the MCVF began between 1.6 and 5.3 million years ago. At least 23 eruptions have occurred throughout its eruptive history. This volcanic activity ranged from effusive to explosive, with magma compositions ranging from basaltic to rhyolitic. Because the MCVF has a high elevation and consists of a cluster of mostly high altitude, non-overlapping volcanoes, subglacial activity is likely to have occurred under less than 800 m (2,600 ft) of glacial ice. The style of this glaciation promoted meltwater escape during eruptions. The steep profile of the volcanic field and its subglacial landforms support this hypothesis. As a result, volcanic features in the MCVF that interacted with glacial ice lack rocks that display evidence of abundant water during eruption, such as hyaloclastite and pillow lava. (Full article...) Featured picture -
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Andrew Jackson (March 15, 1767 – June 8, 1845) was an American lawyer, planter, general, and statesman who served as the seventh president of the United States from 1829 to 1837. Before his presidency, he gained fame as a general in the U.S. Army and served in both houses of the U.S. Congress. Often praised as an advocate for ordinary Americans and for his work in preserving the union of states, Jackson has also been criticized for his racial policies, particularly his treatment of Native Americans.
Jackson was born in the colonial Carolinas before the American Revolutionary War. He became a frontier lawyer and married Rachel Donelson Robards. He briefly served in the U.S. House of Representatives and the U.S. Senate, representing Tennessee. After resigning, he served as a justice on the Tennessee Superior Court from 1798 until 1804. Jackson purchased a property later known as the Hermitage, becoming a wealthy planter who owned hundreds of African-American slaves during his lifetime. In 1801, he was appointed colonel of the Tennessee militia and was elected its commander. He led troops during the Creek War of 1813–1814, winning the Battle of Horseshoe Bend and negotiating the Treaty of Fort Jackson that required the indigenous Creek population to surrender vast tracts of present-day Alabama and Georgia. In the concurrent war against the British, Jackson's victory at the Battle of New Orleans in 1815 made him a national hero. He later commanded U.S. forces in the First Seminole War, which led to the annexation of Florida from Spain. Jackson briefly served as Florida's first territorial governor before returning to the Senate. He ran for president in 1824. He won a plurality of the popular and electoral vote, but no candidate won the electoral majority. With the help of Henry Clay, the House of Representatives elected John Quincy Adams in a contingent election. Jackson's supporters alleged that there was a "corrupt bargain" between Adams and Clay and began creating their own political organization that would eventually become the Democratic Party. (Full article...)
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Calakmul (/ˌkɑːlɑːkˈmuːl/; also Kalakmul and other less frequent variants) is a Maya archaeological site in the Mexican state of Campeche, deep in the jungles of the greater Petén Basin region. It is 35 kilometres (22 mi) from the Guatemalan border. Calakmul was one of the largest and most powerful ancient cities ever uncovered in the Maya lowlands.
Calakmul was a major Maya power within the northern Petén Basin region of the Yucatán Peninsula of southern Mexico. Calakmul administered a large domain marked by the extensive distribution of their emblem glyph of the snake head sign, to be read "Kaan". Calakmul was the seat of what has been dubbed the Kingdom of the Snake or Snake Kingdom. This Snake Kingdom reigned during most of the Classic period. Calakmul itself is estimated to have had a population of 50,000 people and had governance, at times, over places as far away as 150 kilometers (93 mi). There are 6,750 ancient structures identified at Calakmul, the largest of which is the great pyramid at the site. Structure 2 is over 45 metres (148 ft) high, making it one of the tallest of the Maya pyramids. (Full article...)Did you know...
- ...that the CIA began to recruit and train anti-Castro forces for the Bay of Pigs Invasion in the Sierra Madre mountains on the Pacific coast of Guatemala?
- ...that Castillo de los Tres Reyes Magos del Morro (pictured), a fortress which guards the entrance to Havana bay in Havana, was named after the biblical Magi?
- ...that Pico Turquino in the Sierra Maestra mountains is the highest point in Cuba at 6,749 feet?
- ... that the Valley of Mexico has been one of the most heavily populated places on the planet for almost two millennia?
- ...that Lucy Hobbs Taylor was the first female dentist in the United States?
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