This is the 9163rd most frequent French word.
conservatrices
"Conservatrices" means "female conservatives" or "female preservers" in English, depending on context.
Here, "conservatrices" is used as an adjective, agreeing in gender and number with the noun "politiciens" (feminine plural), describing the political orientation as conservative.
Les idées des politiciens conservatrices influencent les politiques actuelles.
The ideas of conservative politicians influence current policies.
In this sentence, "conservatrices" functions as an adjective describing the archives as preserving or conservative in nature.
Les archives conservatrices du musée sont bien protégées.
The museum's preserving archives are well-protected.
The use of "conservatrices" here is as an adjective, describing the values as traditional or resistance to change in nature.