Thus, the regulation of imported technology and foreign goods can potentially create long-run
growth implications (See, e.g., Grossman and Helpman, 1992; Romer, 1990).
Most empirical studies based on the new growth theories use large cross-sections of
countries, for example, the United States (see e.g., Barro, 1991). However, Young (1992)
emphasizes the value of examining individual country experiences:
Case