The last reason is economic, because agricultural output, damage from natural disasters, economic output has depressed prices so low, and with the distribution of assets was not equal, leading to poverty.
The final cause is economic The crop damage from natural disasters, the yield is low. Economic downturn and it is distributed asset inequality that leads to poverty.
The ultimate cause is the economy. Because agricultural damage from natural disasters yield so the prices are low. The economy is down and the property distribution inequality and leads to poverty.