This is the 12186th most frequent Russian word.
индустриализацию
Industrialization: the process of developing industries and manufacturing on a large scale.
In this sentence, 'индустриализацию' is in the accusative case as it is the direct object of the action 'began'.
Индустриализацию в стране начали в 1920-х годах.
Industrialization in the country began in the 1920s.
Here, 'индустриализацию' is used to describe a concept or strategy, referring to the process of developing industries.
Планы на индустриализацию были частью государственного развития.
The plans for industrialization were part of state development.
In this sentence, 'индустриализации' is in the genitive case after 'о необходимости', showing a focus on the concept as a subject of discussion.