Simplify the following text for a Grade 13 native English-speaking person.
Original: Nasjonal Samling ( , National Gathering , National Unification , or informally National Socialist Party ) , abbreviated NS , was a fascist party in Norway that was active in from 1933 to 1945 .
Simplified: Nasjonal Samling ( Norwegian for `` National Gathering '' or `` National Unity '' ) was a fascist party in Norway , active in the period 1933-1945 .