Building a commercial enterprise out of the wilderness required labor and lots of it. For much of the 1600s, the American colonies operated as agricultural economies, driven largely by indentured servitude. Most workers were poor, unemployed laborers from Europe who, like others, had traveled to North America for a new life. In exchange for their work, they received food and shelter, a rudimentary education and sometimes a trade.
By 1680, the British economy improved and more jobs became available in Britain. During this time, slavery had become a morally, legally and socially acceptable institution in the colonies. As the number of European laborers coming to the colonies dwindled, enslaving Africans became a commercial necessity and more widely acceptable.
We may take the winds helping out Gilgamesh's as his "teammates". However, these winds did not come naturally but were thrown in at Humbaba, which sounds like some sort of supernatural control of weather of which Gilgamesh takes advantage to defeat his foe. We can state that Gilgamesh relies on supernatural forces because he leaped upon Humbaba as he saw him pinned down to ground by the action of winds.
The answer is situational irony