The Sources of Growth. Years ago it was thought that physical capital and investment were the keys to growth. The flow of investment lead to the growth of the stock of capital. The growth recipe is far more complicated. Take the former Soviet Union, for example.
Capital includes much more than buildings and machines.
All economists agree that the right kind of investment at the right time is a central element of growth. B. Available resources. For an economy to grow it will need resources. What constitutes a resource at one time may not be a resource at another time. Technology plays an enormous role here.