Examples of using "считались" in a sentence and their english translations:
Slaves were considered property.
Space travel was thought to be impossible.
The translators of the Bible were considered blasphemous.
The translators of the New Testament were considered heretics.
Flights to the moon were once thought absurd.
Oranges were considered a luxury in Europe at the time.
At that time, white bread and meat were considered a luxury.
Furthermore, experiments were never carried out against the rules but were performed always well within them - otherwise they would not be recognized as experiments at all.