USA

https://www.hellenicaworld.com/USA/USA.html

(Marshall Islands) Transportation National air transport system number of registered air carriers: 99 (2020) inventory of registered aircraft operated by air carriers: 7,249 annua
USA Online Encyclopedia

The US Interstate Highway System: 40 Year Report

http://www.publicpurpose.com/freeway1.htm

Research by leading transportation authorities and standard statistical methods have been used to estimate the impacts of the interstate highway system. The imperative for upgradi

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