This is the 10623rd most frequent Russian word.
возводились
"Возводились" means "were being erected" or "were constructed."
The word 'возводились' is used in the past tense to mean 'were built' or 'were erected' as a passive voice verb.
Раньше в этом городе возводились высокие каменные здания.
In the past, tall stone buildings were erected in this city.
Here, 'возводились' describes a repeated action in the past of constructing fortresses using specific materials.
Первые крепости на этой территории возводились из дерева и земли.
The first fortresses in this area were constructed from wood and earth.
In this sentence, 'возводились' indicates the habitual action of building temples on elevated spots in historical context.