Question

Which nation saw a decline in trade with the United States during WWI ?

Answer 1

Answer:

The most possible answer would probably be Germany, "the American dollar plummeted from 32.9 to 1 in 1919 to 433 billion to 1 by 1924. The paper on which German marks were printed had more value as kindling or children's building blocks than as currency." From History.com (This is the most likely answer for your question,)