Which theory posits that the postcolonial world can become like the countries of the developed world if they follow the lead of the developed world economically, politically, and socially

Modernization theory.

Explanation:

The modernization theory was developed by the German sociologist Max Weber, he postulates that all societies have similar developments, therefore every "traditional" society will follow in the footsteps of other societies until it is considered modern.

To achieve this development, traditional societies need the help of already developed societies to guide them to achieve similar social development.

I hope this information can help you.

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