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Africa

Back to Africa: 0 to A.D. 100

Northeast africa

The kingdoms of Meroe and Axum continued to develop. (See page 292) Egypt was under the rule of the Roman emperor, but beyond the mouth of the Nile, the country was actually little touched by Romanization. The royal custom of brother-sister marriage had been copied by the lower classes, and it has been estimated that by this century two-thirds of the citizens of Arsinoe were off spring of sibling unions. Alexandria was now a great trade center containing some 500,000 people, receiving goods from Red Sea ports and exporting its own manufactured products such as linen, processed Arabian drugs, Indian perfumes, papyrus, glass-ware and Egyptian grain. This city which originally was one of the greatest of the Greek cities, gradually became more and more oriental. Strife between Greeks and Jews resulted in massacres; soldiers mutinied and taxes soared.

Ptolemy, or Claudius Ptolemaeus

Not to be confused with the pharoahs of the B.C. centuries
, was a great scientist concerned with the Alexandrian library in this century. Inspired by Hipparchus, who appeared to have provided one of the links between Babylonian and Greek science, Ptolemy wrote a mathematical treatise which became known as the Almagest. The 360 degree circle of the Babylonians was used, trigonometry was promoted and astronomy advanced, although with some errors. With 1,002 stars catalogued the heaven was considered spherical and as rotating around the immobile earth sphere. This concept made Ptolemy's theories very acceptable to the theologians of the later Middle Ages. He did have a system showing relationships of stars and planets which was effective from the practical standpoint. He also wrote a Geographical Treatise which included the geography of Marinus of Tyre. (Ref. 48 )

North central and northwest africa

North Africa remained the granary of Rome, with the Moors as the dominant people of the area now developing considerable sea-power and prestige. The Moors were of Berber origin (later with an Arab mixture) and came originally from south of Morocco in the country of present Mauretania, on the great Atlantic bulge of Africa. In about A.D. 125 a locust invasion destroyed large areas of cropland and this was followed by a plague which killed perhaps 500,000 in Numidia and possibly 150,000 more on the coast. (Ref. 222 )

Subsaharan africa

The changes in central, eastern and southern Africa were very slow. As noted in the last chapter, the introduction of wet zone crops like the yam and banana allowed better penetration of the Bantu-speaking blacks into the forest and low-lying river valleys and coastal plains. They also continued to drift south along the Indian Ocean coast. (Ref. 68 )

Forward to Africa: A.D. 201 to 300

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Questions & Answers

how does Neisseria cause meningitis
Nyibol Reply
what is microbiologist
Muhammad Reply
what is errata
Muhammad
is the branch of biology that deals with the study of microorganisms.
Ntefuni Reply
What is microbiology
Mercy Reply
studies of microbes
Louisiaste
when we takee the specimen which lumbar,spin,
Ziyad Reply
How bacteria create energy to survive?
Muhamad Reply
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Muhamad
they make spores
Louisiaste
what is sporadic nd endemic, epidemic
Aminu Reply
the significance of food webs for disease transmission
Abreham
food webs brings about an infection as an individual depends on number of diseased foods or carriers dully.
Mark
explain assimilatory nitrate reduction
Esinniobiwa Reply
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
Elkana
Examples of thermophilic organisms
Shu Reply
Give Examples of thermophilic organisms
Shu
advantages of normal Flora to the host
Micheal Reply
Prevent foreign microbes to the host
Abubakar
they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
Mark
what is cell
faisal Reply
cell is the smallest unit of life
Fauziya
cell is the smallest unit of life
Akanni
ok
Innocent
cell is the structural and functional unit of life
Hasan
is the fundamental units of Life
Musa
what are emergency diseases
Micheal Reply
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
define infection ,prevention and control
Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life
Lubega
Heyy Lubega hussein where are u from?
_Adnan
en français
Adama
which site have a normal flora
ESTHER Reply
Many sites of the body have it Skin Nasal cavity Oral cavity Gastro intestinal tract
Safaa
skin
Asiina
skin,Oral,Nasal,GIt
Sadik
How can Commensal can Bacteria change into pathogen?
Sadik
How can Commensal Bacteria change into pathogen?
Sadik
all
Tesfaye
by fussion
Asiina
what are the advantages of normal Flora to the host
Micheal
what are the ways of control and prevention of nosocomial infection in the hospital
Micheal
what is inflammation
Shelly Reply
part of a tissue or an organ being wounded or bruised.
Wilfred
what term is used to name and classify microorganisms?
Micheal Reply
Binomial nomenclature
adeolu
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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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