In the second stage of economic growth, the economy undergoes a process of change for building up of conditions for growth and take off. Rostow said that these changes in society and the economy had to be of fundamental nature in the socio-political structure and production techniques. This pattern was followed in Europe, parts of Asia, the Middle East, and Africa. There is also a second or third pattern in which he said that there was no need for change in socio-political structure because these economies were not deeply caught up in older, traditional social and political structures. The only changes required were in economic and technical dimensions. The nations which followed this pattern were in North America and Oceania (New Zealand and Australia).