One danger associated with trade along routes like the Indian Ocean and the Trans-Saharan is that human interactions helped
A
tamine
B
conquering barbarians.
D
O US persecution
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Explanation:

Camel-owning dwellers of desert oases initiated regular trans-Saharan commerce by 300-400 CE. As in all civilizations, slavery found a place in West Africa. Early on, most slaves had been women, later, however, male slaves were put to work. Most came from non-Islamic and stateless societies further south, though some white slave women from the eastern Mediterranean. Most of these slaves were used within this emerging West African civilization, but a trade in slaves also developed across the Sahara. Between 1100 and 1400 CE, perhaps 5,500 slaves per year made the dangerous trek across the desert. Most such slaves were put to work in the homes of the wealthy in Islamic North Africa.

no every country is held to the same degree as others just some member countries such as the usa and germany are more economically sound so the need to show there support to all others  

he risk-return relationship. generally, the higher the potential return of an investment, the higher the risk. there is no guarantee that you will actually get a higher return by accepting more risk. diversification enables you to reduce the risk of your portfolio without sacrificing potential returns.

explanation: