This structural change is the inevitable result of East Africa's development in line with its national condition. In the past, East Africa extensively grew wheat, which was actually influenced by the origins of its immigrants.
The early immigrant population in East Africa came from Europe or the northern parts of the Far East Empire (primarily the Huai-Hai Plain), and the food traditions of these two places greatly influenced the early agricultural development in East Africa.
However, as a tropical country, East Africa, although it has conditions similar to India for growing wheat, is ultimately more suitable for rice cultivation. Yet, rice cultivation is highly dependent on water sources.
The early territory of East Africa mainly included what used to be Tanzania and Kenya, where the dry conditions or poor water facilities made planting drought-resistant crops such as wheat and millet naturally reasonable.
