Explanation:

- Independence: After gaining independence, many countries did see economic changes, but the initial phase often involved recovery and rebuilding rather than rapid industrial growth.

- Planning: This is a crucial step. For instance, India's Five-Year Plans aimed at systematic economic development, focusing not just on agriculture but also promoting industrial and tertiary sectors.

- Colonial rule: Typically, colonial rule stifled local economies and primarily developed industries that benefited the colonizers rather than promoting broad economic growth.

- Green revolution: While pivotal for agriculture, the Green Revolution primarily boosted agricultural productivity but had a limited direct impact on the industrial and tertiary sectors.