 While outside of Albania, domestic travel eventually became largely regulation-free, stringent controls on the issue of passports, visas and foreign currency made foreign travel difficult inside the Eastern Bloc.Countries were inured to isolation and initial post-war autarky, with each country effectively restricting bureaucrats to viewing issues from a domestic perspective shaped by that country's specific propaganda.Severe environmental problems arose through urban traffic congestion, which was aggravated by pollution generated by poorly maintained vehicles.