The correct answer is when west Germany was formed
The Soviets wanted all of Germany but since they couldn't have it they saw what the western forces did to Western Germany and how it was a capitalist country and they understood that they would not get reparations as long as they were a communist country and that they were perceived as a threat. This is why they locked Eastern Germany completely away with strong borders.
As my memory serves me well, Greek and Roman philosophers contributed to the theory of evolution when they agreed that A.all living things are related.
