Due to nearby Cleveland's position as a national hub of the railroad industry, rail also contributed greatly to Solon's growth.

But compared to some other national hubs of export activity, Long Island for now appears on firmer footing, her research showed.

Aim 2 'A national hub of the low carbon economy'

Aim 2 'A national hub of the low-carbon economy'

The Polish airline market was until 2004 a classical case of closed market, with bilateral agreements between countries served from the national hub- Warsaw.

One way it has managed to reduced its costs is by flying from small, traffic-starved airports near big cities, rather than from busy national hubs.

In more recent times Louisville has become a national hub for air cargo, creating over 20,000 local jobs.

The airport is an important national and international hub for the Southwestern Colombia region.

The airfield there also serves as a second national hub for international flights.

The move towards business tourism transformed the capital into a national hub for this segment of the tourist industry.