I want to know the answer to the following question:
In what year did Royal Dutch Shell make a bid to purchase approximately 30% of Shell Oil Company's shares?
All the background I'm provided with is that "Through most of Shell's early history, the Shell Oil Company business in the United States was substantially independent with its stock being traded on the NYSE and with little direct involvement from the group's central offices in the running of the American business.". Is that enough to answer the question?
Answer: no