উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।
ব্যাখ্যা ও সঠিক সমাধান
উত্তর:
Primitive Stage
Rostow's stages of economic growth model is one of the major historical models of economic growth.
It was published by American economist Walt Whitman Rostow in 1960.
The model postulates that economic growth occurs in five basic stages, of varying length.