Answer:
no one wants to talk at the moment
Is significant, but unpredictable.
The last one. During the crusades, different foods and such were found, different goods were unlocked to europe, and different mathematic and scientific ideas were brought back as well.
If I was an ordinary person in my 1930s and aged 40 with a middle income job such as an 'office assistant', I would not be in favour of helping other countries.
I would personally prefer a policy of isolation from the rest of the world. Primarily, this would be because I had seen with my very won eyes, the death and destruction bought on by World War I and more importantly the Great Depression.
With millions of job less people, poverty and people barely making ends meet, I would want our government to concentrate on the welfare of our own people, rather than go to war with countries thousands of miles away.