Answer:
Self Interest or self-interested.
Can be considered poor. Their GDP puts them in the second lowest position in the worldwide GDP rank, meaning that both their income and consumption are very low (small scale farming and textile manufacturing are also evidence of this) meaning their living conditions are sub-optimal for most of the people.
Answer
Mesopotamia
Explanation
Mesopotamia is a region between the two rivers Tigris and Euphrates in western Asia. They depended on annual flooding to produce a constant surplus of food because the floods brought silt which was very fertile to the lands and it contained the minerals required by the soil and the nutrients which helps the plants to be more productive.
Also in Egypt floods along the river Nile helped farmers in good production of plants because it carried black soil to their farms which was very fertile.
The kingdom went into decline from the mid-16th century CE when the Portuguese, put off by the interference of Kongo's regulations on trade, moved their interests further south to the region of Ndongo. The latter kingdom had already defeated a Kongo army in 1556 CE.