Answer:
From the seventeenth century on, slaves became the focus of trade between Europe and Africa. Europe’s conquest and colonization of North and South America and the Caribbean islands from the fifteenth century onward created an insatiable demand for African laborers, who were deemed more fit to work in the tropical conditions of the New World. The numbers of slaves imported across the Atlantic Ocean steadily increased, from approximately 5,000 slaves a year in the sixteenth century to over 100,000 slaves a year by the end of the eighteenth century.
Evolving political circumstances and trade alliances in Africa led to shifts in the geographic origins of slaves throughout the seventeenth and eighteenth centuries. Slaves were generally the unfortunate victims of territorial expansion by imperialist African states or of raids led by predatory local strongmen, and various populations found themselves captured and sold as different regional powers came to prominence. Firearms, which were often exchanged for slaves, generally increased the level of fighting by lending military strength to previously marginal polities. A nineteenth-century tobacco pipe (1977.462.1) from the Democratic Republic of the Congo or Angola demonstrates the degree to which warfare, the slave trade, and elite arts were intertwined at this time. The pipe itself was the prerogative of wealthy and powerful individuals who could afford expensive imported tobacco, generally by trading slaves, while the rifle form makes clear how such slaves were acquired in the first place. Because of its deadly power, the rifle was added to the repertory of motifs drawn upon in many regional depictions of rulers and culture heroes as emblematic of power along with the leopard, elephant, and python.
The institution of slavery existed in Africa long before the arrival of Europeans and was widespread at the period of economic contact. Private land ownership was largely absent from precolonial African societies, and slaves were one of the few forms of wealth-producing property an individual could possess. Additionally, rulers often maintained corps of loyal, foreign-born slaves to guarantee their political security, and would encourage political centralization by appointing slaves from the imperial hinterlands to positions within the royal capital. Slaves were also exported across the desert to North Africa and to western Asia, Arabia, and India.
