Ask this question again, you're going to need a more specific time the president has done this. however, if you are asking about WWI, the USS Lusitania, the Zimmerman Telegram, German U Boats targeting American ships, and so on.
Hoover's response to the Great Depression was the Smoot-Hawley tariff which rose tariffs on over 20,000 products. This measure led to retaliation from foreign countries especially from Europe and they rose their own tariffs on their American imports, the American economy was hit back and it explains why Hoover's policy failed.
Hoover was nicknamed "Do nothing" by the Democrats, they blamed him for sticking to Laissez faire economics, but this accusation was wrong as he pushed for more state intervention which eventually failed.
Hey! :)
Industrialization in the UK, and this answer will narrow the UK down to Great Britain and England was indeed different than the industrialization in China. Even without breaking down China's industrialization to the time before and after the Communist Party took over China in 1950, the two countries' industrialization process was vastly different. Here is why:
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England's industrial revolution had its roots in the later part of the 17th Century while China's began much later.
Hope this helps! :)</span>
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
