I guess you refer to Poland in the years 1918–1939.

Reemerging after being occupied for 123 years, Poland comprised lands formally controlled by adversary powers. The borders between former occupiers ran across the center of the nation. There were barely any railways or roads between the country’s east and west, north, and south parts. Deprived access to the port in Gdańsk, Poland, had limited abilities to export coal and agriculture products, the very few products that the economically backward country could sell.

To address these problems, the capitalists started with building a new port in Gdynia and connecting it by the new railroad with coal mines on the south. As capitalists do, they did it as fast as Americans would do.

They started the so-called COP (Central Industrial Region), focusing on the heavy machine industry. The prototypes of the first Polish were flying just before WWII started.

Chasing profit, Polish capitalists realized that the overpopulated countryside could not get rich by cultivating rye and potatoes on small farms. They started orchards and greenhouses. The small family farms continued this during the Soviet domination years. After capitalists returned in 1998, a relatively small Poland became one of the largest apple producers in the world.

Capitalists in Poland during 1918–1938 put a lot of effort into education, training engineers, and administrators. Despite that, during WWII, both Germans and Soviets made a systematic effort in killing Polish intelligentsia; they did not kill them all. Those people rebuilt Poland after WWII, they were my professors, and they held Poland from corruption, as we see it in Russia or Ukraine.

The capitalist thinking survived the 45 years of Soviet indoctrination. In 1989 Poland’s GDP per capita was about for times less than in the United States. Now it is about half of it.

That is what those nasty greedy capitalists usually do; they spread prosperity.