The major effect of drought in Nigeria is population migration. Drought is a natural disaster that results from prolonged periods of low rainfall, which can cause crops to fail and water sources to dry up. In Nigeria, many people depend on agriculture for their livelihoods, so when there is a drought, it can lead to food shortages and economic hardship. As a result, many people are forced to migrate to other areas in search of food and water. This can lead to overcrowding in cities and other areas, as well as social and economic problems. In addition, drought can also have other effects, such as increased temperatures and dust storms, which can exacerbate health problems and damage infrastructure.