We also present the estimates of the GDP per capita within the current Polish borders. While Poland is seen by some people as "sold at Yalta Conference), the country was major economic victor of the war!

Polish economy achieved impressive regional convergence. The speed of convergence was higher than in the communist era, similar to Western Europe during its best (1950s, 1960s), at least in the terms of convergence.

We also present estimates on the regional level. In Silesia the output per capita was similar to Germany, in Warsaw to Czechoslovakia, in Krakow to Romania. In the poorest Tarnopol region GDP pc was similar to Nigeria.

In their canonical work on the interwar Polish economy, Landau and Tomaszewski question whether Poland's output in 1938 exceeded that of 1924. Our findings indicate that it was significantly higher—by 27%—with particularly strong growth in the former Russian territories.

We convert our estimates to 1990 GK$ and discuss why Maddison estimates for Poland (similarly to other CEE countries, see chapters by M. Morys and Łazor & Murgescu) should not be trusted.

We demonstrate that Polish GDP per capita in the years 1924 - 1938 expanded by 2.3% annually.

Our research on the economic growth and regional convergence in interwar Poland has just been published. This thread presents our most important conclusions ;-).