I formulate and estimate a model of externalities within countries and technological interdependence across countries. I find that external returns to scale to physical capital within countries are 8 percent; that a 10 percent increase of total factor productivity of a country's neighbors raises...

After the introductory presentation of basic concepts related to entrepreneurship and its importance, and the entrepreneur in the entrepreneurial process, we will focus on analyzing the factors of business start-up. We found that in the domestic and foreign literature there are many...