Marie-Sophie Nielsen

Marie-Sophie Nielsen was born in 1875 in the village Nørre Herlev, North Zealand.

From 1916 to 1918 Nielsen was a key member of the Danish Social Democratic Party, sitting on that organization's directing committee.

[1] Nielsen became a founding member of the Communist Party of Denmark (CPD) in 1920.

The same year she was a delegate representing the Communist Teachers Club to the 2nd World Congress of the Comintern, held in Petrograd and Moscow.

In 1928 she was expelled by the Communist Party for not supporting the campaign against Leon Trotsky.