Полските инженери в България
The loss of independence, and then the collapse of the national uprisings against Russia (1831, 1863) forced many Poles to emigrate. Many former military in emigration began working as engineers. A major center of the Polish immigration was the Ottoman Empire and the Polish engineers contributed to the modernization of the state. Some of them worked in Bulgarian lands, building telegraph lines, roads and railways. Several of them remained in Bulgaria after its liberation. Boleslav Anz served as Principal Engineer of Bulgarian railways and Sabin Halatkevich participated in the expansion and completion of the Bulgarian railway network until his death in 1935.
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