The answer is D. Pathogen
Slavery was downright essential to mercantilism in eighteenth-century Great Britain. This was because mercantilism depended on the use of colonies to produce raw materials, particularly cash crops <span>, for the mother country. These cash crops, with sugar being by far the most important, represented a major source of revenue for Great Britain. </span>
Heritage day, as its name states, celebrates heritage (obviously). The reason that "closes gaps" from the past is because it celebrates culture that was suppressed in the past, and it promotes diversity and unity that was previously discouraged or prosecuted.