Mercantilism, as an economic theory and practice, emphasized the importance of accumulating wealth, primarily gold and silver, through a favorable balance of trade. It often involved the exploitation of colonies and resources, leading to the growth of the transatlantic trade route.
Among the options you provided, the most relevant implication of mercantilism growing the transatlantic trade route would be:
B: it was implied that the colonists were inferior to their mother country.
Mercantilism supported the idea that colonies existed primarily for the benefit of the mother country, reinforcing a hierarchical relationship where the colonists were often seen as subordinate to the interests of their European rulers. This view justified the extraction of resources and labor from the colonies for the benefit of the empire.
While option A (implying that Africans were inferior) also relates to the Atlantic slave trade, which was a component of the transatlantic trade, the fundamental principle of mercantilism aligns more closely with the relationship between colonists and the mother country. Options C and D, while relevant in broader contexts, are not direct implications of mercantilism itself.