Why people prefer Terai region than others​

The Terai or Tarai is a lowland region in northern India and southern Nepal that ... In northern India, the Terai spreads from the Yamuna River eastward across Haryana, ... In other projects.

Similarly, the population density of terai region is more because there are better facilities, fertile soil, good connection of road, a large number of industries etc. There are five development regions in Nepal.This is because there are better facilities in central development region than other development regions.

answer; cultural trait;