I want to know the answer to the following question:
What does the U.S. believe caused Thailand to help Japan?
All the background I'm provided with is that "The policy of the U.S. Government ever since 1945 has been to treat Thailand not as a former enemy, but rather as a country which had been forced into certain actions by Japanese blackmail, before being occupied by Japanese troops.". Is that enough to answer the question?
Answer: yes