They make sure its not bad or discriminating
The Industrial Revolution is generally considered to have ended in the early 1800's. ... We are currently in the digital revolution, which many say started in the 80's (although a case could be made for before).
Answer;
Hitler intended to defeat Great Britain by; A massive bombing attack;
Explanation;
After the French armistice was signed on 22 June, Britain was the only country resisting Germany. Hitler did not wish to invade Britain, after the fall of France, he assumed the British would simply surrender.
Hitler was therefore surprised when Britain did not surrender. On july 16 he gave a directive which authorized detailed preparations for an invasion landing in Britain, code named operation Sealion.
I am confused about your question, because neither Truman or Eisenhower were around when Vietnam was happening...
If you clarify, I might be able to answer your question