You didn't give us a location or context for this question, but I'm going to guess you might be talking about the ramping up of industrialization in the Soviet Union during the years of Stalin's leadership. In the USSR, about 100,000 more metric tons of coal were produced in 1938 than had been in 1928. Stalin (the "man of steel") was eager to make his nation an industrial superpower and be strong for any further war than might be faced.
If they don’t go they can get stuck in the storm
It might be said that this picture shows that Leonardo Da Vinci used a realistic style based on human figures.
This might be characterized by the lighting, the linear and atmospheric perspective, the anatomy, etc
It seems that Renaissance painters rendered the human anatomy with precision, but he was a step forward because of the earlier anatomical drawings.
