Why Didn T Papua New Guineans Grow Wheat

The geographic location of a civilization dictates its elevation and latitude, which determine its climate, and season cycle, all of which control what crops can grow there, which in turn controls if and how the civilization grows and develops. For example, wheat requires a semi-arid climate, defined seasons, wet springs, and hot dry summers. That means that wheat cannot be too close to the equator where there are no defined seasons, and cannot be grown too far from the equator where the summers are not hot enough, or the springs are too dry. Wheat is relatively easy to harvest, is high in nutrition, and can be stored for 3-5 years, so while the civilizations with semi-arid climates like those in the Fertile Crescent were growing wheat with ease, civilizations like Papua New Guinea were stuck with the dreadful sago trees.
This whole process took multiple days with multiple people working one one tree, and the number of calories gained from this dough So why didn’t the Papua New Guineans grow wheat? Because they couldn’t. Papua New Guinea is right in the middle of the tropics, where there are no seasons that wheat needs in order to grow. Having wheat allowed the Fertile Crescent to have easy, regular meals that they could store for 3-5