“…Modern scientists, concerned about the migration crisis of 2014-2015, study migration processes mainly fragmentary in relation to the classical theory of migration Ravenshtein. For example, that the main causes of migration are precisely economic reasons, they state in their works Allen et al (2018), Arif (2020), Gibson et al (2020), Kone et al (2020), andMurard (2020). Some scholars believe that economic, political and, to a lesser extent, social institutions are key factors in attracting migrants, and economic and social factors are push factors (Arif, 2020).…”