This type of creation story or myth could be a good example of what is called "Earth-diver". As the name suggests, this kind of creation myth involves a vast ocean and almost nothing else. Someone, a god, dives into the ocean to retrieve something small that would expand exponentially to fill/complete the rest of the world. The sample story adheres almost completely to the "Earth-diver" except for the fact that the "diver" had not been a deity.
It was successful because they had attacked it and had destroyed majority of it. They did not complete everything because the objective was to get the us in the war and win but us beat them. That is why I think they didn’t accomplish everything
C. There were not enough workers to cultivate and harvest crops.
