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Africa

Back to Africa: 500 to 401 B.C.

Northeast africa

Kush continued its prosperity with extensive trade routes. The ruins of both Napata and Meroe still stand today and there are the remains of pyramids like those of Egypt but also Hellenistic pillars, Arabian arches and even hieroglyphs with Hindu-like symbols, all suggesting a cosmopolitan atmosphere. Axum continued to exist still farther south. (Ref. 175 )

The Egyptians revolted successfully against the Persians under the 28th, 29th and 30th dynasties, but late in the century, as we shall see, the Macedonian-Greek Alexander took over the old Persian territories, including Egypt. The city of Alexandria was founded just before Alexander's death in about 323 B.C. and there was soon accumulated there a great research library containing perhaps 400,000 manuscripts in literature, mathematics, astronomy and medicine. Later, as Alexander's empire was divided, the Macedonian general, Ptolemy, took over Egypt and helped make it into a great commercial nation.

North central and northwest africa

A portion of what is now Libya went with Egypt as part of the Persian Empire and then later Alexander's. Otherwise the chief point of interest was Carthage which in- creased in population and power and participated in intermittent wars with Sicily. Between 310 and 306 B.C. the navies of Carthage and the Sicilian Greeks were in a terrible conflict with the Carthaginians gathering a great invasion force of about 1,500 vessels. In so doing, however, they had to leave the gates of Hercules unguarded, thus making it possible for the first time in some years for the ships of other Mediterranean nations to reach the Atlantic. (See WESTERN EUROPE, this chapter). To pay their soldiers, after conquering Sicily, the Carthaginians engaged the finest Sicilian Greek artists to make dies for casting new Sicilian-Carthaginian coins, and these were soon circulating wherever the north Africans had business dealings.

In the post-Alexander period at the end of the century the Libyan Greeks of Cyrene became the major source of learned men at the court of the Ptolemies in Alexandria. Cyrene exported chiefly horses and silphium, an herb used in Roman cooking. (Ref. 66 , 211 )

Subsaharan africa

By 300 B.C. permanent settlement in the Tichit Valley in the southwest Sahara had ended because of desiccation. The Sudanese Negroes, stretching across the continent just south of the Sahara now had iron technology and with greater population, better agricultural methods and possibly greater social cohesion, they were able to expand southward throughout Africa at the expense of indigenous inhabitants whom they conquered, absorbed or displaced. In the early centuries they confined themselves to the drier regions where their cereals could grow. These were the people known in the east and south as "Bantu", although actually the name refers to their language, rather than to any particular tribe. (Ref. 68 , 45 )

Forward to Africa: 300 to 201 B.C.

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Questions & Answers

what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
How can I make nanorobot?
Lily
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
how can I make nanorobot?
Lily
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
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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