Describe how economic policy in developing nations has changed in the years since independence

The idea of development and economic growth is to make industries, services and other economic activities grow. Increasing food output and consumable goods and building facilities to generate energy. The book is suggests a pattern of change: (1) independent developing nations needed capital and heavy investment,(2) they opted for government led economies (3) these command economies failed and generated debt, (4) in the 1980's market reforms were introduced.