One of the major legislations in the field of aviation includes the Airline Deregulation Act of 1978. This act focused on defining the role of Civil Aeronautics Board (CBA) in the economic regulation of airline industry. The act removed all the price, market entry and route control restrictions over the airlines that were applied by the Government. With this act in practice, most of the airlines struggled economically and some even got bankrupt. As new competition emerged in the airline market, direct flights were replaced by routing them through a single hub or center which lead to the hub-and-spoke model.
One of these hubs is Atlanta city. Hartsfield–Jackson Atlanta International Airport was used as a collection point so that all the passengers from smaller cities could be brought here and then set off for longer flights. This air access has made Atlanta become renowned across the world. With largest carrier shares by Delta (69.01% in 2013), The Atlanta airport alone produces 30,000 to 35,000 jobs and is considered the biggest employer (non-government) in the Southeast region.
In the similar manner, Cincinnati also experienced economic growth as a result of the expansion of Cincinnati/Northern Kentucky International Airport. Serving as a hub for Delta, its non-stop destinations increased from 35 to 102. The number of annual passengers increased and CVG started investing heavily i.e. $500 million for another Delta terminal. Even as a moderately populated city (1.6 million), the city of Cincinnati became to be known as a major air hub.
