The city was then resettled by immigrants from various parts of Yugoslavia, once more changing heavily the city's demographics and its linguistic structure. These years coincided also with a period of general reconstruction and new industrialization after the destruction of the war. During the period of the Yugoslav Communist administration between the 1950s and the 1980s, the city became the main port of the Federal Republic and started to grow once again, both demographically and economically, taking advantage of the newly re-established hinterland which it lacked during the Italian period, as well as the rebuilding of its traditional manufacturing industries after the war, its maritime economy and its port potential. This, paired with its rich commercial history, allowed the city to soon become the second richest (GDP per capita) district within Yugoslavia. Many of these industries and companies, being partly influenced by a socialist-planned economy and the unique Yugoslav co-operative model, and due to an often fraudulent privatisation process within the newly founded Republic of Croatia, were not able to survive the move to a full market-oriented model in the early 1990s.