The nation that was ultimately responsible for the Berlin Blockade was the "USSR" which is also Russia, since Russia was trying to keep capitalist influence out of the region.
A. It has made the spread of cultures and ideas easier
This, being a personal question i believe.
Ibn Al-Haytham was a famous muslim scholar whose works spanned many fields. He was a surgeon, doctor, but also a philosopher, mathematician, and astronomer. He was truly a great mind who significantly contributed towards the life we have today.