||Changes brought by transport technologies.
Rise and cohesion of civilizations (e.g. Egypt, Rome and China).
Development of modern nation states.
||Transport and economic development (indirectly
and directly). Factor in the production and added-value of goods
and services. Facilitates economies of scale. Influences land
(real estate) value. Contributes to the specialization of regions.
||Access to healthcare, welfare, and cultural
events. Shape social interactions.
||Nation building and national unity. National
defense (Roman empire, American road network). Rules and regulations.
Mobility often subsidized (e.g. public transit or highways).
||Important environmental impacts. Pollution,
exploitation of natural resources.