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Africa

Back to Africa: A.D. 1301 to 1400

Northeast africa

This part of the world experienced no great change from the previous century. The Solomonid Dynasty in Ethiopia was at the height of its power and Amhara colonists continued to invade southern Shoa, Gojam and the base of the Semien Mountains. The Moslems controlled all the Red Sea coast, however, and confined the Christians to the Ethiopian highlands. Even Nubia became Moslem. The Caucasoid Azanians in the northeastern interior felt the impact of migrating Bantu speakers and the arrival of Nilo Hamites with their Cushitic languages, such as Galla, influenced the region. These Nilo-Hamites appear to have been a mixture from three origins, - Nilotic Negroids of the upper Nile, Cushitic Sidama of Ethiopia and a third of origin unknown. (Ref. 83 )

The Mamluk Dynasty continued in Egypt, but with declining power and influence.

It must be recalled that this ruling group were originally warriors from the Caucasus region and this communication with Black Sea ports allowed recurrent epidemic disasters in Egypt. Disease, helped probably by oppression and bad government, resulted in depopulation and impoverishment. The last great Mamluk sultan was Qaitbay (1468-96), an avid builder, who restored some of the greatness of the old Bahri period of the 13th century, but the decline of the empire was only temporarily halted. (Ref. 140 , 5 )

North central and northwest africa

The coast still had a high cultural level and now acted as a refuge for the Moors fleeing from the persecutions in Spain. With the decline of the Moroccan Marinids and after the Portuguese seized Ceuta, opposite from Gibralter in 1415, the Hafsids gained at least titular supremacy over all of western North Africa for while. By 1478 the Wattasid Sultanate developed in the far west and the Ziyanid Emir existed between the Wattasid and the slipping Hafsids. (Ref. 137 , 83 ) By the end of the century, the Arabs had established sugar cane in the Moroccan Sousse and from there it soon spread on into the Atlantic to Madeira, the Canaries and the Azores.

Subsaharan africa

Just southwest of the Sahara it was the heyday of the Songhai, who had great mosques at Timbuktu and Jenne and were famous for their piety and scholarship. Relationships of this particular empire with Morocco were not cordial because of competition for the trans-Saharan trade and the valuable salt mine of Taghaxa in the northern desert. This Songhai Empire came into its zenith about 1464, when a warrior king, the Sonni Ali, came to the throne of Gao in the middle Niger and by his death had extended his rule over the whole western Sudan. He had cavalry, levies of foot soldiers and flotillas of war canoes, which patrolled the 1,000 miles of the navigable Niger. It was he who ended the Mali Empire of Ghana. (Ref. 83 )

In the forest area of west Africa were the Edo, who developed great bronze sculpture in the Kingdom of Benin, near the coast of Nigeria. Benin was a walled city, 25 miles around, with wide, straight streets and spacious houses of wood. In Ife, in southwest Nigeria, one of these bronze heads was definitely made by the lost wax technique. Seven Hausa city-states, including Kano, Zaria, Gobir and Katsina had become flourishing commercial centers in the Sudan. Agriculture was the basis of society, with trade routes through the Sahara. Guinea, existing out on the southwest corner of the bulge of west Africa, would, at first glance, appear to be a site early exploited by Europeans, but actually it remained isolated for a long time because European ships could not return from there directly up the west African coast. Because of the Atlantic currents and wind, they had to go straight out to the middle Atlantic before they could turn and go north again. The people of Guinea were modest farmers and fishermen, with some local trade involving salt and dried fish. Deeper inland, they had some contact with the Sudan. This small country has a rain forest, but it is not deep and is traversed by the magnificent waterway, the Niger. Near the end of the century the Portugese did arrive to establish a trading post. A little to the east, the foundations had been laid for the famous forest states of Oyo and Akan, as well as Benin, which we have described above. (Ref. 206 , 17 , 83 , 8 ) The Sudan had gold mines, ruled by village chiefs and the workers approached the condition of slavery. (Ref. 292 )

Questions & Answers

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
Commplementary angles
Idrissa Reply
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Sherica
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Sherica
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Tamia
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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
is it 3×y ?
Joan Reply
J, combine like terms 7x-4y
Bridget 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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