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Africa

Back to Africa: A.D. 401 to 500

Northeast africa

There were three separate Christian kingdoms in the region of Nubia in the middle Nile. At Ibrim an old temple, which was originally built probably during the Ethiopian Dynasty of Egypt in the 7th century B.C. and then modified later with typical Meriotic graffiti and votive inscriptions, was now made into the earliest of Ibrim Christian churches. A defensive wall around the church is now partially covered by Lake Nasser. (Ref. 271 )

Early Abyssinians were active militarily, invading the Yemeni kingdoms on the Arabian Peninsula. In the middle of the century Axum was at the height of its power with a splendid court boasting royal elephants and gold. The capital city funneled materials from inner Africa to a maritime network reaching as far as Spain and even China. Axum covered an area of 75 hectares and contained many multistory stone buildings with 10,000 to 20,000 inhabitants and a fringe of suburban, elite villages. (Ref. 270 ) But the downfall of this country started when the Persians expelled the Axumites from south Arabia as a part of the Byzantine-Persian Wars. This was followed by raids by pagan Bela on the farmlands, so that gradually the people moved deeper into the highlands, merging with the pagan and Judaized people there and becoming the Abyssinians proper, the nucleus of later Ethiopia. (Ref. 82 , 83 )

Egypt continued to decay, politically and intellectually. Part of this was promoted by the decline in the incense trade which had previously come from the south, in part through Egypt. The country remained nominally under the control of the Byzantine Empire.

North central and northwest africa

The Vandal kingdom of North Africa was reconquered for the Byzantine Empire by Justinian's General Belisarius in 533. Otherwise North Africa remained much as in the last century. (Ref. 8 )

Subsaharan africa

In the tropical regions the availability of iron after A.D. 500 led to the development of kingdoms whose chief weapons were iron spears. A few Negroid Bantu-speakers filtered into the Bushman and Hottentot domains in South Africa. (Ref. 213 , 83 )

Forward to Africa: A.D. 601 to 700

Questions & Answers

A golfer on a fairway is 70 m away from the green, which sits below the level of the fairway by 20 m. If the golfer hits the ball at an angle of 40° with an initial speed of 20 m/s, how close to the green does she come?
Aislinn Reply
cm
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Siyaka Reply
A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. During its fall, how much work is done on the mouse by air resistance
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Can you compute that for me. Ty
Jude
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what is viscosity?
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emma Reply
what is chemistry
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what is inorganic
emma
Chemistry is a branch of science that deals with the study of matter,it composition,it structure and the changes it undergoes
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Pedro
A ball is thrown straight up.it passes a 2.0m high window 7.50 m off the ground on it path up and takes 1.30 s to go past the window.what was the ball initial velocity
Krampah Reply
2. A sled plus passenger with total mass 50 kg is pulled 20 m across the snow (0.20) at constant velocity by a force directed 25° above the horizontal. Calculate (a) the work of the applied force, (b) the work of friction, and (c) the total work.
Sahid Reply
you have been hired as an espert witness in a court case involving an automobile accident. the accident involved car A of mass 1500kg which crashed into stationary car B of mass 1100kg. the driver of car A applied his brakes 15 m before he skidded and crashed into car B. after the collision, car A s
Samuel Reply
can someone explain to me, an ignorant high school student, why the trend of the graph doesn't follow the fact that the higher frequency a sound wave is, the more power it is, hence, making me think the phons output would follow this general trend?
Joseph Reply
Nevermind i just realied that the graph is the phons output for a person with normal hearing and not just the phons output of the sound waves power, I should read the entire thing next time
Joseph
Follow up question, does anyone know where I can find a graph that accuretly depicts the actual relative "power" output of sound over its frequency instead of just humans hearing
Joseph
"Generation of electrical energy from sound energy | IEEE Conference Publication | IEEE Xplore" ***ieeexplore.ieee.org/document/7150687?reload=true
Ryan
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Maurice Reply
what are the types of wave
Maurice
answer
Magreth
progressive wave
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Mujahid
A string is 3.00 m long with a mass of 5.00 g. The string is held taut with a tension of 500.00 N applied to the string. A pulse is sent down the string. How long does it take the pulse to travel the 3.00 m of the string?
yasuo 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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