The USA is the first economy in the world with almost 14 trillion dollars of GDP – this is a rate that would satisfy the needs of the whole of Africa. Thus the US economy has adopted a progressive way of development in order to constantly modernise and support a steady growth. This makes the US the country with the most innovative approaches in technology and modernisation.
The first aspect that made the US such a technologically advanced economy is the period of the 30s of the twentieth century. The reason is because during that period Europe was undergoing some serious economical difficulties, people from Asia were pressed by the growing power of Japan and aggression of Imperialism. This was the reason why many of the bright minds of Europe and Asia emigrated to the US and offered their services and scientific work to the US. This is how, for example, Albert Einstein became a scientific worker for the US government and developed his nuclear theories that were later put into practice.
The second and quite important aspect of the US economy that contributed to the steady growth and domination of the US over the rest of the world, is the demand. Simply, the increase in the demand leads to more production and to modernise production science needs to be developed. This is how the US became home of the most innovative air craft factories, advanced computer laboratories, birthplace of the computer software and main developer of bio products, not to mention the best teaching jobs and further education. This, along with the foreign competition during the Cold War and the Space Era, has been driving up the US economy and so far the North Americans remain the strongest economically and the most developed nations around the globe.