(a) Commonalities between India and Soviet Union:
(i) Both the nations shaped the nation on linguistic basis.
(ii) To promote welfare motives, the economic and technological developments took place in India also.
(iii) States were divided on the grounds of geographical boundary and strength of populations also in both the nations.
(b) Dissimilarities:
(i) Soviet Union was divided into 15 independent republics/countries to be disintegrated.
(ii) India maintained its unity and integrity even among diversified nature of states and peoples without any more division.
(c) The Indian experiment worked better to promote linguistic and cultural plurality without affecting unity and integrity of the nation though India adopted some diplomatic measures to make country united.