This paper investigates the impact of technical progress on the relationship between competition an investment. Using a model of oligopoly competition with di¤erentiated products where firms invest to reduce their marginal cost of production, I find that technical progress, which increases the...

In the present paper we analyse for the first time as far as we know, the ancient Greek regional proto-federations, of free-democratic city-states. We examine their political institutions and policies, like common defense and external policy, military organization, representative federal bodies...