Mezue ahịrịokwu na-esonụ:
Ọgba aghara Jenụwarị nke 1863 megide ndị Russia. Mgbe nnupụisi a kụrụ afọ n'ala, ọ ghọrọ onye nnọchianya nke òtù "ndị ọcha" bụ́ ndị kwadoro iso ndị Russia mee nkwekọrịta. Na 1870, Kronenberg guzobere Bank Handlowy, ụlọ akụ azụmahịa nke Warsaw, na 1875 ọ guzobere Warsaw School of Economics. O guzobekwara ụlọ ọrụ akwụmụgwọ nke Warsaw, Industrial Cashier, Warsaw Fire Insurance Company, Coal Mine Association na Metallurgical Works.