The figurative language that is being described in the
sentence is foreshadowing. This is being defined as a way of using phrases,
hints or words in means of unfolding the story or giving the readers a hind of
what would likely happen next.
Historically, people have been loyal to their ancestral traditions, native lands, defined territories, and existing power-holders. But new trends that were emerging in human society (e.g. Enlightenment movements, Industrial Revolution) at the end of the eighteenth century began to drive people to nationalism.
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Answer:
There was capital gain in selling the African people to the European colonists.