Erforderten
Erforderten is the Präteritum (simple past) form of the German verb erfordern when the subject is plural. It corresponds to “they required” or “they necessitated.” Because it is a conjugated verb form, erforderten is not used as a noun and is usually found in written or formal narrative contexts.
The verb erfordern means to require, necessitate, or demand something as a condition or consequence. It is
Usage notes and examples: In everyday formal writing, erfordern often introduces the idea that a situation