What are the roots of 3M’s culture of entrepreneurship and innovation? What were the key tenets of this culture as they emerged over time? How has the culture of entrepreneurship and innovation nurtured at 3M from the era of McKnight through to that of DeSimone? How has entrepreneurship been institutionalized within the company? What were the strengths of the organization and culture of 3M during the McKnight to DeSimone era? What were the potential weaknesses? The expansion of 3M into international markets was highly successful. What explains this? By the 1990s 3M was starting to develop some problems. What were the causes of these problems?