With the development of hydropower in southern Norway, the city gradually developed an industrial base, particularly with the establishment in 1910 of the nickel refinery Kristiansands Nikkelraffineringsverk AS (later Falconbridge Nikkelverk, now Glencore Nikkelverk).
From an economic perspective, the First World War was a good time for Kristiansand, as a neutral shipping city.
The crises that followed with the gold standard politics of the 1920s and the world economic crisis of the 1930s were also deeply felt in a trading city like Kristiansand.

The labour movement had important pioneers in the city, and Leon Trotsky spent about a year of his exile in the archipelago offshore from Kristiansand.
Arnulf Øverland took him from Randesund to Ny-Hellesund in Søgne in 1936.
In the interwar period Kristiansand was a centre for intellectuals, especially after the architect Thilo Schoder settled there in 1932.

Kristiansand was attacked by German naval forces and the Luftwaffe during the Operation Weserübung on 9 April 1940.
The naval forces met fierce resistance from Norwegian coastal artillery at Odderøya.
Bombs and grenades also hit the downtown and the 70 meter high church tower of the Kristiansand Cathedral was hit by accident.
The third attack attempt on the city succeeded because a signal flag was confused with a French national flag and the misunderstanding was not discovered until it was too late.
The city was occupied by a force of 800 men.

Post-war construction included further development of the Lund section, and in the 1960s and 1970s Vågsbygd to the west was developed into a section with 20,000 inhabitants.
In the 1980s, industry and business in the city declined, in part because of the 1986 fire at the Hotel Caledonien.
But beginning in the second half of the 1990s, business increased in momentum with the development of enterprises for marine and offshore equipment, security technology and drilling.

The older municipal archives for Kristiansand (and the former municipalities) are currently held at the Inter-Municipal Archives in Vest-Agder (IKAVA).
This includes documents concerning, for example, local councils, chairmanships, poor boards, school boards and archives including among other things personal documents in the form of client records, tax records, and also school records.

On 1 January 2020, the three neighbouring municipalities of Kristiansand, Songdalen, and Søgne will be merged to form one large municipality called Kristiansand.
With the development of hydropower in southern Norway, the city gradually developed an industrial base, particularly with the establishment in 1910 of the nickel refinery Kristiansands Nikkelraffineringsverk AS (later Falconbridge Nikkelverk, now Glencore Nikkelverk). From an economic perspective, the First World War was a good time for Kristiansand, as a neutral shipping city. The crises that followed with the gold standard politics of the 1920s and the world economic crisis of the 1930s were also deeply felt in a trading city like Kristiansand.
The labour movement had important pioneers in the city, and Leon Trotsky spent about a year of his exile in the archipelago offshore from Kristiansand. Arnulf Øverland took him from Randesund to Ny-Hellesund in Søgne in 1936. In the interwar period Kristiansand was a centre for intellectuals, especially after the architect Thilo Schoder settled there in 1932.
Kristiansand was attacked by German naval forces and the Luftwaffe during the Operation Weserübung on 9 April 1940. The naval forces met fierce resistance from Norwegian coastal artillery at Odderøya. Bombs and grenades also hit the downtown and the 70 meter high church tower of the Kristiansand Cathedral was hit by accident. The third attack attempt on the city succeeded because a signal flag was confused with a French national flag and the misunderstanding was not discovered until it was too late. The city was occupied by a force of 800 men.
Post-war construction included further development of the Lund section, and in the 1960s and 1970s Vågsbygd to the west was developed into a section with 20,000 inhabitants. In the 1980s, industry and business in the city declined, in part because of the 1986 fire at the Hotel Caledonien. But beginning in the second half of the 1990s, business increased in momentum with the development of enterprises for marine and offshore equipment, security technology and drilling.
The older municipal archives for Kristiansand (and the former municipalities) are currently held at the Inter-Municipal Archives in Vest-Agder (IKAVA). This includes documents concerning, for example, local councils, chairmanships, poor boards, school boards and archives including among other things personal documents in the form of client records, tax records, and also school records.
On 1 January 2020, the three neighbouring municipalities of Kristiansand, Songdalen, and Søgne will be merged to form one large municipality called Kristiansand.
Kristiansand