Stalin question? what was his role in the in the development of the global geopolitical in the first half...?

Stalin's role was to take a backwards, primarily rural, country and turn it into a global superpower within about 15 years.

He achieved this through the twin policies of collectivising agriculture and five year plans for industry.

Collectivisation rationalised Soviet farming - from small, peasant farming to huge industrial farms. Collectivisation was a partial success, it did rationalise the agricultural sector, but the cost was huge - a famine in Ukraine killed an estimated 7million. But it did provide the surplus grain for export needed to pay for the Five Year Plans.

Five Year Plans set the targets that industry had to meet over a 5 year period. Vast factories were built, huge hydro-electric projects completed and new mines sunk.

But what made the USSR a superpower was WWII. The Soviet Union was invaded and the Nazis killed millions, destroyed much of the country and enslaved much of the civilian population in areas they captured. But, the Soviets fought back, eventually pushing the Germans all the way to Berlin. At the end of the war they had the biggest, best equipped and best led army in Europe. They also were beginning to work on their own nuclear bomb - once they had successfully tested it, they were the military match for the USA.

Stalin was determined, after WWII, to ensure that the Soviet Union had "Global Reach" - i.e. it's navy could patrol any of the World's oceans, and its aircraft were the match - or better - of anything the West could manufacture.

See:

Stalin, A Biography by Robert Service