Southampton City Council has developed twinning links with Le Havre in France (since 1973), Rems-Murr-Kreis in Germany (since 1991), Trieste in Italy (since 2002); Hampton, Virginia in USA, Qingdao in China (since 1998), and Busan in South Korea (since 1978). In what country does Southampton City Council have a twinning link with Rems-Murr-Kreis