Information:  - History. The introduction of self-government in rural districts was a major political change. The Norwegian farm culture ("bondekultur") that emerged came to serve as a symbol of nationalistic resistance to the forced union with Sweden. The legislation of 1837 gave both the towns and the rural areas the same institutions: a minor change for the town, but a major advance for the rural communities. The significance of this legislation is hailed by a nationalistic historian, Ernst Sars:  - The municipality of Porsgrunn was established on 1 January 1838 (see formannskapsdistrikt). The town of Brevik and the rural district of Eidanger were merged into the municipality of Porsgrunn on 1 January 1964.  - Eidanger is a rural parish and former municipality of Porsgrunn, in Telemark County, Norway.  - Cathrine Roll - Matthiesen , née Svendsen ( born September 23 , 1967 in Porsgrunn ) is a Norwegian former handball player . She played in the clubs IF Borg , IL Vestar , Lunner IL , Bouillargues ( France ) , Larvik HK , Tertnes Håndball and Tjølling IF . Between 1985 and 1996 she played in 234 matches for the Norwegian National team , scoring 921 goals .    What entity does 'cathrine roll-matthiesen' has the relation 'country of citizenship' with?
Answer:
norway