The Iron Curtain forms the Western border of the Soviet Satellite nations: all the countries to the West, also called the "West Bloc" were capitalist and the countries on the East are called "East Bloc".
So the relationship was: the Iron Curtain was to the West of the Soviet Satelite nations.
The cultural pattern would be their ethnicity.
Due to the influence of soviet union, these countries develop a sense of nationalism that view their nation as 'superior' compared to other nations.
This makes these nations developed a tendency to maintain their own race and heritage, leading to the rise of a homogeneous society.
Various degrees of SPECIALIZATION occur in the adaptation for leaping.
Many of the villages of Mesopotamia are built of second-hand bricks of a very good quality