I want to know the answer to the following question:
Shell Oil Company historically had little direct involvement from what entity in the running of its American businesses?
All the background I'm provided with is that "However, in 1984, Royal Dutch Shell made a bid to purchase those shares of Shell Oil Company it did not own (around 30%) and despite opposition from some minority shareholders, which led to a court case, Shell completed the buyout for a sum of $5.7 billion.". Is that enough to answer the question?