Hey there!
<span>hastened the decline of African society is the answer</span>
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The correct answer is slavery
Slavery, is the social practice in which a human being acquires property rights over another called a slave, to whom this condition is imposed by force.
In some societies, since the most distant times, slaves were legitimately defined as a product. Prices changed according to physical conditions, professional skills, sex, age, origin and destination.
When we speak of slavery, it is difficult not to think of the Europeans who overcrowded the holds of their ships of men brought from Africa regardless of their wills and who were put up for sale in an inhuman and cruel manner throughout America.
Huns, Vandals and Visigoth :)
Some of them are poor working conditions and the poor living conditions as well, low wages, child labor and of course which is obvious pollution hope this helps out on your assignment or question have a good day and be positive
Britain. Thus began the War of 1812 (a bit of a historical curiosity, since the United States declared the war and then waited for Britain to come and fight rather than immediately invading or attacking).