This paper looks at the genesis of innovation in the United States from a territorial perspective. The analysis aims to … disentangle the impact of local R&D expenditure from other contextual conditions supportive of the process of innovation …. Particular emphasis is devoted to the role of socio-economic factors and systems of innovation conditions (‘social filter …

other factors which may condition economic growth, such as innovation, migration, and the local ‘social filter’, taking also … into account the geographical component of intervention in transport infrastructure and innovation. The results of the two … filter’, good innovation capacity, both in the region and in neighbouring areas, and a region's capacity to attract migrants …