Some examples are Karl Marx, Adam Smith , and Frederick Engels. They wrote about the economic severity that industrialization caused and they also caused the emergence of their own economic theories such as capitalism and communism.
Answer:
The invasion of Poland marked the start of World War 2. Britain and France were not convinced that it was a defensive war and it all began world war 2. Poland was also divided between the USSR and Germany so the Western Allies saw that their tactic of starving Germany of resources would be impossible since the USSR continued to supply the Germans at that stage of the war. New tactics and technology were tested in Poland and those same tactics will later be even more developed against France.
I think the answer to this question would be true