Large firms in the western industrialised countries and the nationalised industries of the developing countries have established special ports that are of significance to the world economy at centres of raw materials resources near the coast.
Amashishini amakhulu kumazwe atyebileyo aseNtshona kunye namashishini aphakathi kumazwe aklulayo enze amazibuko enqanawa engaqhelekanga ebalulekilyo kwi-ikhonomi yelizwe lonke kumbindi wezixhobo zemveliso ecaleni konxweme.