Thus, a growing economy has to have larger shares of non-agriculture sectors. Additionally, the scope for technological innovation and accompanying productivity increase is much greater in non-agriculture sectors (in particular industry) than in agriculture. Hence, growth leads to expansion of non-agriculture sectors (via demand) and expansion of non-agriculture sectors leads to faster growth (via their generally higher productivity). The question is why certain countries prove more successful than others in bringing about dynamic structural transformation (accompanied, that is, by an overall rise in productivity) and what the latter can do to emulate the former. All developing countries that have witnessed sustained successful economic growth since 1960 used active industrial polices to support the economic diversification and technological upgrading of their economies.