“…The research of demographic evolution, but especially of the two structures, was the subject of analysis for researchers from both Romania and other countries (Clark, 2002;Kamusella, 2004;Mukharyamov, 2004;Akturk, 2007;Gumenai, 2008;Herman, 2009;Ghiță, 2011;Macháček, 2011;Truzzi and Bassanezi, 2013;Scarpim, 2014;Tofan, 2014;Majo, 2015;Matlovič et al, 2015;Shemshurenko et al, 2016;Simoni and Dagnino, 2016;Darulová et al, 2018;Zekanovic and Gnjato, 2018;Gostyusheva and Dolzhikov, 2019;Lung, 2019a, b;Ilieș et al, 2020;Lung and Mureșan, 2020). The studies were addressed from different perspectives, because both ethnicity and confession are an important support of human understanding and living.…”