liittyivät
Liittyivät is a Finnish verb form: the imperfect (past) tense, third-person plural of liittyä. Liittyä means to join, to become part of something, to relate to or pertain. Therefore liittyivät can express that several subjects became connected to something in the past, or that several topics were related to a matter.
Typical uses include describing affiliations, participation, or relevance. For example: Hankkeeseen liittyivät viisi yritystä. (Five companies
Grammatical notes: liittyivät is the third-person plural past tense form of liittyä. The present tense third-person
Etymology and usage context: liittyä derives from the root related to connection or joining, reflected in related