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A map shows the locations of the major West African empires before 1492, including the Ghana Empire; Mali Empire; Kanem Empire; Yoruba Empire; Benin Empire; Songhay Empire; Bachwezi Empire; Great Zimbabwe Empire; Carthaginian Empire; Persian Achaemenid Empire; Fatimid Caliphate; and Umayyad Caliphate.
This map shows the locations of the major West African empires before 1492. Along the Mediterranean coast, Muslim states prevailed.

By 1200 CE, under the leadership of Sundiata Keita, Mali had replaced Ghana as the leading state in West Africa. After Sundiata’s rule, the court converted to Islam, and Muslim scribes played a large part in administration and government. Miners then discovered huge new deposits of gold east of the Niger River. By the fourteenth century, the empire was so wealthy that while on a hajj , or pilgrimage to the holy city of Mecca, Mali’s ruler Mansu Musa gave away enough gold to create serious price inflation in the cities along his route. Timbuktu, the capital city, became a leading Islamic center for education, commerce and the slave trade. Meanwhile, in the east, the city of Gao became increasingly strong under the leadership of Sonni Ali and soon eclipsed Mali’s power. Timbuktu sought Ali’s assistance in repelling the Tuaregs from the north. By 1500, however, the Tuareg empire of Songhay had eclipsed Mali, where weak and ineffective leadership prevailed.

The role of slavery

The institution of slavery is not a recent phenomenon. Most civilizations have practiced some form of human bondage and servitude, and African empires were no different ( [link] ). Famine or fear of stronger enemies might force one tribe to ask another for help and give themselves in a type of bondage in exchange. Similar to the European serf system, those seeking protection, or relief from starvation, would become the servants of those who provided relief. Debt might also be worked off through a form of servitude. Typically, these servants became a part of the extended tribal family. There is some evidence of chattel slavery    , in which people are treated as personal property to be bought and sold, in the Nile Valley. It appears there was a slave-trade route through the Sahara that brought sub-Saharan Africans to Rome, which had slaves from all over the world.

An illustration shows traders transporting a group of slaves, who are connected at the neck and bound at the wrists.
Traders with a group of slaves. Note how the slaves are connected at the neck. Muslim traders brought slaves to the North African coast, where they might be sent to Europe or other parts of Africa.

Arab slave trading, which exchanged slaves for goods from the Mediterranean, existed long before Islam’s spread across North Africa. Muslims later expanded this trade and enslaved not only Africans but also Europeans, especially from Spain, Sicily, and Italy. Male captives were forced to build coastal fortifications and serve as galley slaves. Women were added to the harem.

The major European slave trade began with Portugal’s exploration of the west coast of Africa in search of a trade route to the East. By 1444, slaves were being brought from Africa to work on the sugar plantations of the Madeira Islands, off the coast of modern Morocco. The slave trade then expanded greatly as European colonies in the New World demanded an ever-increasing number of workers for the extensive plantations growing tobacco, sugar, and eventually rice and cotton ( [link] ).

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, U.s. history. OpenStax CNX. Jan 12, 2015 Download for free at http://legacy.cnx.org/content/col11740/1.3
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