Answer:
What was Commodore Perry's significant contribution to the beginning of Japan's transformation? He opened Japan to the West. Which similar challenge did China and Japan face following the Sino-Japanese War? Their isolation left them far behind Europe.
the answer is an economic factor.
The Vietnam War affected the attitude of Americans toward future conflicts around the world in that Americans have been "less" willing to intervene inthe affairs of other countries, since the Vietnam War has widely been viewed as a major mistake.
