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Africa

Back to Africa: A.D. 201 to 300

Northeastern africa

In the region of Sudan the old Kushite Kingdom had been replaced by the Kingdom of Meroi, although the basic population remained a Kush people. The new kingdom had a unique African character but it did not thrive long, apparently conquered sometime between 320 and the end of the century by neighboring Axum of northern Ethiopia. The name "Kush" now disappeared, to be replaced by "Nubia". The Nobatae, coming from Kordofan and the Blemmyes (Bela) coming from the Nile Valley to the east, blended with the old Kushites to form the population of medieval Nubia. Before Christianity came to this area there are indications that this was, in modern terminology, a "swinging place". Remnants of a large tavern constructed in the middle of the century at Ibrim indicate that the wine flowed freely up to about A.D. 500. (Ref. 271 , 83 ) The populous Axum had adopted the Monophysite Christian faith and this new religion was the foundation of the kingdom which was soon to be called Abyssinia. By 362 this kingdom also included a portion of the southern Arabian area. A distinguishing feature of Axum was the use of stone-masonry without mortar. There is still standing a 23 meter high obelisk, simulating a nine-story palace, constructed in this 4th century when this state was considered one of the four world powers. (Ref. 270 ) The Axum emperor, King Ezana, had been converted to Monophysitism by the Syrian Frumentius who had originally been shipwrecked on the Red Sea coast.

The resulting Ethiopian Orthodox Church, actually a branch of the Egyptian Coptic, spread over the highland of north Ethiopia. (Ref. 8 , 175 )

In Egypt there was political and cultural decline. Christianity made many converts along the coast but of the Monophysite variety. This sect believed that there was only one nature in God and Jesus, with a complete denial of the Trinity. This faith survives today in some eastern areas and, as suggested above, particularly in Ethiopia. Arianism, another great "heresy" which was mentioned above, also originated in Alexandria. In contrast to the dogma of the Monophysites, Arius preached that Christ was not one with God but rather the Logos (See Philo, page 297), the first and highest of all created beings. The Son was neither coeternal with nor consubstantial with the Father. Politically, Egypt remained nominally under the Roman Empire, even as it began to collapse. A popular literature in the Coptic language appeared in this century. (Ref. 48 , 127 )

North central and northwest africa

The coast line of North Africa remained subject to Roman control as the Christian faith spread across the area. As in the last century, in the west the Berber-Moors became more and more prolific and independent. Although camels had been present in Africa previously they now came into extensive use by the Berbers, a feature which helped them to become formidable opponents to all foreigners along the coast. In the 370s Firmus, a Moorish chieftain, rebelled against the Roman Valentian I and was stopped only after a series of massacres. (Ref. 127 , 83 )

Subsaharan africa

There was very little significant change from the last century. In the west the Empire of Ghana continued its development, while all along the east coast the Bantu-speakers expanded and more Indonesian traders appeared bringing the Asian yam and taro from Southeast Asia. The latest estimate of the time of the establishment of Great Zimbabwe by Bantu-speaking blacks is A.D. 320 (150 years). These were the Gokomere people and they may either have lived there or simply used it as a camp. There is some evidence that they had iron. (Ref. 176 , 8 , 83 , 222 )

Forward to Africa: A.D. 401 to 500

Questions & Answers

Three charges q_{1}=+3\mu C, q_{2}=+6\mu C and q_{3}=+8\mu C are located at (2,0)m (0,0)m and (0,3) coordinates respectively. Find the magnitude and direction acted upon q_{2} by the two other charges.Draw the correct graphical illustration of the problem above showing the direction of all forces.
Kate Reply
To solve this problem, we need to first find the net force acting on charge q_{2}. The magnitude of the force exerted by q_{1} on q_{2} is given by F=\frac{kq_{1}q_{2}}{r^{2}} where k is the Coulomb constant, q_{1} and q_{2} are the charges of the particles, and r is the distance between them.
Muhammed
What is the direction and net electric force on q_{1}= 5µC located at (0,4)r due to charges q_{2}=7mu located at (0,0)m and q_{3}=3\mu C located at (4,0)m?
Kate Reply
what is the change in momentum of a body?
Eunice Reply
what is a capacitor?
Raymond Reply
Capacitor is a separation of opposite charges using an insulator of very small dimension between them. Capacitor is used for allowing an AC (alternating current) to pass while a DC (direct current) is blocked.
Gautam
A motor travelling at 72km/m on sighting a stop sign applying the breaks such that under constant deaccelerate in the meters of 50 metres what is the magnitude of the accelerate
Maria Reply
please solve
Sharon
8m/s²
Aishat
What is Thermodynamics
Muordit
velocity can be 72 km/h in question. 72 km/h=20 m/s, v^2=2.a.x , 20^2=2.a.50, a=4 m/s^2.
Mehmet
A boat travels due east at a speed of 40meter per seconds across a river flowing due south at 30meter per seconds. what is the resultant speed of the boat
Saheed Reply
50 m/s due south east
Someone
which has a higher temperature, 1cup of boiling water or 1teapot of boiling water which can transfer more heat 1cup of boiling water or 1 teapot of boiling water explain your . answer
Ramon Reply
I believe temperature being an intensive property does not change for any amount of boiling water whereas heat being an extensive property changes with amount/size of the system.
Someone
Scratch that
Someone
temperature for any amount of water to boil at ntp is 100⁰C (it is a state function and and intensive property) and it depends both will give same amount of heat because the surface available for heat transfer is greater in case of the kettle as well as the heat stored in it but if you talk.....
Someone
about the amount of heat stored in the system then in that case since the mass of water in the kettle is greater so more energy is required to raise the temperature b/c more molecules of water are present in the kettle
Someone
definitely of physics
Haryormhidey Reply
how many start and codon
Esrael Reply
what is field
Felix Reply
physics, biology and chemistry this is my Field
ALIYU
field is a region of space under the influence of some physical properties
Collete
what is ogarnic chemistry
WISDOM Reply
determine the slope giving that 3y+ 2x-14=0
WISDOM
Another formula for Acceleration
Belty Reply
a=v/t. a=f/m a
IHUMA
innocent
Adah
pratica A on solution of hydro chloric acid,B is a solution containing 0.5000 mole ofsodium chlorid per dm³,put A in the burret and titrate 20.00 or 25.00cm³ portion of B using melting orange as the indicator. record the deside of your burret tabulate the burret reading and calculate the average volume of acid used?
Nassze Reply
how do lnternal energy measures
Esrael
Two bodies attract each other electrically. Do they both have to be charged? Answer the same question if the bodies repel one another.
JALLAH Reply
No. According to Isac Newtons law. this two bodies maybe you and the wall beside you. Attracting depends on the mass och each body and distance between them.
Dlovan
Are you really asking if two bodies have to be charged to be influenced by Coulombs Law?
Robert
like charges repel while unlike charges atttact
Raymond
What is specific heat capacity
Destiny Reply
Specific heat capacity is a measure of the amount of energy required to raise the temperature of a substance by one degree Celsius (or Kelvin). It is measured in Joules per kilogram per degree Celsius (J/kg°C).
AI-Robot
specific heat capacity is the amount of energy needed to raise the temperature of a substance by one degree Celsius or kelvin
ROKEEB
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Source:  OpenStax, A comprehensive outline of world history. OpenStax CNX. Nov 30, 2009 Download for free at http://cnx.org/content/col10595/1.3
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