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The Mercator projection (/mərˈkeɪtər/) is a cylindrical map projection presented by Flemish geographer and cartographer Gerardus Mercator in 1569. It became the standard map projection for navigation because it is unique in representing north as up and south as down everywhere while preserving local directions and shapes. The map is thereby conformal. As a side effect, the Mercator projection inflates the size of objects away from the equator. This inflation is very small near the equator but accelerates with increasing latitude to become infinite at the poles. As a result, landmasses such as Greenland, Antarctica, Canada and Russia appear far larger than they actually are relative to landmasses near the equator, such as Central Africa.
originally posted by: DISRAELI
One reason why the world has been content with Mercator is that "knowing the relative sizes of countries" has not been seen as a priority. People have been more interested in locating countries in relation to each other, for the sake of travel and movements of arnies. For that purpose, Mercator centred upon the Greenwich meridian is ideal (unless you're fighting a war in the Pacific). It tells you that you reach Greenland by sailing west from Iceland, and that it's a good jumping-off point for the North pole, and you don't normally need to know much more than that.
The peopling of the South Pacific happened in two stages, the first of which took place more than 3,000 years ago when mysterious seafarers known as the Lapita set off from Papua New Guinea's Bismarck Archipelago into the great blue void of the Pacific. Within a startlingly few generations they managed to find and colonize hundreds of hidden tropical paradises: Vanuatu, Fiji, Tonga, Samoa, New Caledonia.
They sailed as pioneers, not explorers, bringing their families and everything they might need to build new homes on the lands they clearly expected to find: flints for toolmaking, pottery, and foodstuffs—including their chickens.
A second, much later phase, beginning around the year A.D. 800, saw them expand into the vastness of the eastern Pacific—to Tahiti, Bora Bora, the Marquesas, Easter Island, and Hawaii. Precisely how these people accomplished such astonishing voyages, and why they attempted them, remains an intriguing mystery, for they left behind no writings and very few artifacts. (Read "Beyond the Blue Horizon" in National Geographic magazine.)
With so few clues to work from—not a single example of an early Polynesian voyaging canoe survives today—archaeologists have been forced to tease out the story of this great migration from the evidence of scattered bones and pottery shards on far-flung islands, and strands of DNA from the plants and livestock the South Seas pioneers brought with them and whose descendants live on today.
originally posted by: putnam6
Definitely true about the movement of early armies, makes me wonder how widespread the knowledge of the maps was this way early on. How many early explorers were thrown off by the enormity of Africa?
Hell, I can spend hours on Google Earth, just the vastness of the Pacific alone, how in the hell did the Polynesians do so much pioneering? Who looked at a map and said let's all go there? and of BTW it's gonna be such a long arduous voyage some of us are likely to die.
originally posted by: DISRAELI
originally posted by: putnam6
Definitely true about the movement of early armies, makes me wonder how widespread the knowledge of the maps was this way early on. How many early explorers were thrown off by the enormity of Africa?
Hell, I can spend hours on Google Earth, just the vastness of the Pacific alone, how in the hell did the Polynesians do so much pioneering? Who looked at a map and said let's all go there? and of BTW it's gonna be such a long arduous voyage some of us are likely to die.
The very earliest explorers had the blissfulness of ignorance. They had no maps, so they did not know that their journey was impossible, so they saw no reason not to try. They thought their destination would be round the next cape, and didn't know otherwise until they looked. Even Columbus tried only because all his calculations were wrong, and he thought the Europe-to-China sea-journey was much shorter than it really was.
originally posted by: DISRAELI
a reply to: putnam6
The "ignorance" theory is perhaps most applicable to the Portuguese getting round Africa on the sea-route.
The Portuguese
The Portuguese had been leaders in Atlantic navigation well ahead of Columbus’s voyage. But the incredible wealth flowing from New Spain piqued the rivalry between the two Iberian countries, and accelerated Portuguese colonization efforts. This rivalry created a crisis within the Catholic world as Spain and Portugal squared off in a battle for colonial supremacy. The pope had earlier intervened and divided the New World with the Treaty of Tordesillas in 1494. Land east of the Tordesillas Meridian, an imaginary line dividing South America, would be given to Portugal, whereas land west of the line was reserved for Spanish conquest. In return for the license to conquer, both Portugal and Spain were instructed to treat the natives with Christian compassion and to bring them under the protection of the Church.
Lucrative colonies in Africa and India initially preoccupied Portugal, but by 1530 the Portuguese turned their attention to the land that would become Brazil, driving out French traders and establishing permanent settlements. Gold and silver mines dotted the interior of the colony, but two industries powered early colonial Brazil: sugar and the slave trade. In fact, over the entire history of the Atlantic slave trade, more Africans were enslaved in Brazil than in any other colony in the Atlantic World. Gold mines emerged in greater numbers throughout the eighteenth century but still never rivaled the profitability of sugar or slave trading.
Jesuit missionaries brought Christianity to Brazil, but strong elements of African and Native spirituality mixed with orthodox Catholicism to create a unique religious culture. This culture resulted from the demographics of Brazilian slavery. High mortality rates on sugar plantations required a steady influx of new enslaved laborers, thus perpetuating the cultural connection between Brazil and Africa. The reliance on new imports of enslaved laborers increased the likelihood of resistance, however, and those who escaped slavery managed to create several free settlements, called quilombos. These settlements drew from both enslaved Africans and Natives, and despite frequent attacks, several endured throughout the long history of Brazilian slavery.15
Despite the arrival of these new Europeans, Spain continued to dominate the New World. The wealth flowing from the exploitation of the Aztec and Incan Empires greatly eclipsed the profits of other European nations. But this dominance would not last long. By the end of the sixteenth century, the powerful Spanish Armada would be destroyed, and the English would begin to rule the waves.
originally posted by: SprocketUK
Sorta mental when you realise just how huge Africa is....You can fit the USW, China and India in there easily and still have a ton of room left over.
originally posted by: Mahogany
Area size in square miles:
USA - 3,797,000
China - 3,705,000
India - 1,269,000
Russia - 6,602,000
Africa - 11,730,000
originally posted by: Xtrozero
originally posted by: Mahogany
Area size in square miles:
USA - 3,797,000
China - 3,705,000
India - 1,269,000
Russia - 6,602,000
Africa - 11,730,000
And South America is 17,840,000
Brazil is 3,200,000
Continental US is actually 3,119,000
originally posted by: Xtrozero
originally posted by: Mahogany
South America is 6.888m, and yes 3.797 is US with Alaska and Hawaii.
South America and Russia are about the same size.
Thanks, read the wrong number
Google Maps use a Spherical Normal (equatorial) variant of the Mercator projection for its map images.
We accept imagery projected using a standard cartographic projection such as Universal Transverse Mercator (UTM), a satellite-based datum such as GRS80, or WGS84; or in Geographic Coordinates (aka "latitude/longitude") with WGS84 datum.