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We should note, that just as in the Pacific, ships were not able to go straight eastward across the Atlantic from the Caribbean, because of the prevailing winds and currents. Spanish ships first made a rendezvous at Havana, then sailed close by the Gulf Coast through the Bahama Channel in the Gulf Stream along the coast to the Carolinas, where westerly winds returned them to Spain. As previously noted, many were wrecked on the mainland coasts. (Ref. 267 )

South america

Northern and western south america

The first South American contact of the Spaniards occurred in 1501 when the Bay of Santa Marta and the Gulf of Cartagena in Colombia were explored. According to the chroniclers the natives were then living on the seacoast on a 90 mile strip below an altitude of 3,300 feet, engaged in gold metallurgy. The Spanish called them the Chairamas, whence came the name of the Tairona society, which may mean a place where metal is melted. The actual mines may have been located farther west and the Chairamas may have obtained it from the Taumacos, who dominated the gold bearing regions. Nevertheless, the fighting between the coast Indians and the Spaniards was bloody and the latter never did really conquer the area, as the Taironas withdrew to the mountains where they finally disappeared, probably from disease and hunger. The ruins of their original settlements have been in part excavated and have revealed stone buildings reached by roads and paved stairways some of which were 60 feet wide and by bridges of stone blocks. There were rock carvings and farming terraces and artificial mounds, perhaps for ceremonial use.

In the next 25 years several Spanish towns were established along this northern coast of South America. In 1528 the Welsers of Augsburg even appeared in Venezuela, but Spanish ill-will and terrible local atrocities brought their financial enterprises to failure. (Ref. 62 , 292 )

Before the days of the Spaniards some of the desert coast land of Peru was inhabited. Every 25 miles or so the desert is cut by a stream or river, which has created an oasis and made life possible. In the past some of these were the sites of very large cities, but during Hispanicization provincial life turned away to the central Andes and the coast remained practically bare. Like Mexico, parts of South America were densely settled at the time of European discovery. The Andean population was about 25,000,000 to 30,000,000. The people of Peru were mainly vegetarian, although there were some fish and occasionally communal game hunts for deer, llamas, guanacos, bears, pumas, foxes and vizcacha. Guinea pigs were raised in nearly every household along with ducks. The chief foods, however, were maize, potatoes, squash, beans, manioc and sweet potatoes, peanuts, tomatoes, avocados and chili peppers. Maize would not grow above 11,000 feet but potatoes and other tubers such as oca and guinoa, would. The potatoes were preserved by combined freezing and drying methods and the result was called "chunu", of greatest importance to highland People

It should be noted that because the Andes Indians had the custom of replanting the smaller potatoes and eating the larger ones, potatoes at that time were generally only peanut-sized. The large potato of today is the product of centuries of more enlightened horticulture. (Ref. 222 )
The slave workers of the silver mines of Potosi (now in south central Bolivia) subsisted almost entirely on chunu. That city was founded in 1545 at the altitude of 13,780 feet and by 1,600 had 100,000 people. Although the Spaniards spent most of their time looking for gold, silver was the real treasure of South America and soon the quicksilver mines of Huancavelica in Peru did not supply sufficient mercury for the amalgam processing in all the American silver mines and additional supplies had to be shipped from Spain and Yugoslavia. (Ref. 292 )

Questions & Answers

find the 15th term of the geometric sequince whose first is 18 and last term of 387
Jerwin Reply
The given of f(x=x-2. then what is the value of this f(3) 5f(x+1)
virgelyn Reply
hmm well what is the answer
Abhi
how do they get the third part x = (32)5/4
kinnecy Reply
can someone help me with some logarithmic and exponential equations.
Jeffrey Reply
sure. what is your question?
ninjadapaul
20/(×-6^2)
Salomon
okay, so you have 6 raised to the power of 2. what is that part of your answer
ninjadapaul
I don't understand what the A with approx sign and the boxed x mean
ninjadapaul
it think it's written 20/(X-6)^2 so it's 20 divided by X-6 squared
Salomon
I'm not sure why it wrote it the other way
Salomon
I got X =-6
Salomon
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x-6
ninjadapaul
oops. ignore that.
ninjadapaul
so you not have an equal sign anywhere in the original equation?
ninjadapaul
hmm
Abhi
is it a question of log
Abhi
🤔.
Abhi
Commplementary angles
Idrissa Reply
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Sherica
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Sherica
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Tamia
hii
Uday
what is a good calculator for all algebra; would a Casio fx 260 work with all algebra equations? please name the cheapest, thanks.
Kevin Reply
a perfect square v²+2v+_
Dearan Reply
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Abdirahman Reply
algebra 2 Inequalities:If equation 2 = 0 it is an open set?
Kim Reply
or infinite solutions?
Kim
The answer is neither. The function, 2 = 0 cannot exist. Hence, the function is undefined.
Al
y=10×
Embra Reply
if |A| not equal to 0 and order of A is n prove that adj (adj A = |A|
Nancy Reply
rolling four fair dice and getting an even number an all four dice
ramon Reply
Kristine 2*2*2=8
Bridget Reply
Differences Between Laspeyres and Paasche Indices
Emedobi Reply
No. 7x -4y is simplified from 4x + (3y + 3x) -7y
Mary Reply
how do you translate this in Algebraic Expressions
linda Reply
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
Chris Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
bamidele Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, A comprehensive outline of world history (organized by region). OpenStax CNX. Nov 23, 2009 Download for free at http://cnx.org/content/col10597/1.2
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