I want to know the answer to the following question:
What was most influential American 20th century tort law?
All the background I'm provided with is that "The American Law Institute subsequently adopted a slightly different version of the Greenman rule in Section 402A of the Restatement (Second) of Torts, which was published in 1964 and was very influential throughout the United States.". Is that enough to answer the question?
Answer: no