The participants in the Congress, who were all representatives of monarchs had a deep distrust of nationalism, because it was associated with revolution and republican values and they ignored the demand of nationalities such as the Poles.
Hope this helps!
B. the dropping of the atomic weapons demonstrated the potential power of each bomb, leading the Japanese to surrender in order to protect the remaining civilian population.
The assembly line was a manufacturing method that allowed much more efficient mass production of goods. This was pioneered by Henry Ford in 1913.
