For the more developed regions, the urban population has been exceeding the rural one already since 1950 (figure 2.2.) Both of these trends show uninterrupted continuation since 1950. The latter ones saw urban population exceeding in number the rural population in late 1950 in Central and Eastern Europe, Caucasus and Central Asia and only in mid-1980 in South Eastern Europe. The situation in the sub regions is nevertheless impacted by its most populous countries, like e.g. the South-Eastern Europe byTurkey. Most of these countries have been seeing decreases in both rural and urban population, with the latter one being even steeper, which resulted in lower rates of urbanization in 2010 compared with 1990. The explanation for such a development can be the migration of population related with the collapse of the communist system and the disintegration of the Soviet Union in the early 1990, and in later years, for countries that joined the European Union, the job migration to Western Europe and for the Eastern European and Central Asian countries, the job migration to Russian cities.