Background Paragraph: Distance decay is a geographical term which describes the effect of distance on cultural or spatial interactions. The distance decay effect states that the interaction between two locales declines as the distance between them increases. Once the distance is outside of the two locales' activity space, their interactions begin to decrease.

With the advent of faster travel, distance has less effect than it did in the past, except where places previously connected by now-abandoned railways, for example, have fallen off the beaten path. Advances in communications technology, such as telegraphs, telephones, broadcasting, and internet, have further decreased the effects of distance.[1]. 
Story: Chad invested massively in railways and highways over the past decade. They also funded many IT projects and telecom infrastructure. On the other hand, Bahrain invested less, and didn't do much to improve communication pathways and technologies between different villages.
Which country experiences faster travel? Which country experiences greater distance decay effect? Which country experiences less interaction between two locales? Which country experiences less of a cultural isolation effect? Which country experiences less of a distance effect? Which country experiences lesser distance decay effect? Which country experiences more interaction between two locales? Which country experiences more of a cultural isolation effect? Which country experiences more of a distance effect? Which country experiences slower travel?