America is at the half way of the road and the time of the definitive imposing seems to have arrived. After a world-wide bi-polar power system (SUA-URSS), it can pass to a unique-polar power system avoiding a multi�polarities system dangerous at world-wide scale. Pax Americana remains a main...

Nowadays it becomes obvious that entrepreneurship and economic performance are closely linked. 

In economic literature, the competitive advantage’s relevance is still debatable.