It's a common story: an immigrant arrives in a new country, sees a need, and works hard to build a successful business around it. Think of Chobani, Google, or Tesla. Indeed, 45 percent of Fortune 500 companies had immigrant founders. While most research focuses on why these people launched their businesses, perhaps more interesting is how they achieved lasting success. Neri Karra Sillaman is an entrepreneurship expert at Oxford University and the founder of luxury leather goods company Neri Karra. She's studied these entrepreneurs and shares her findings, which offer lessons for anyone in the corporate world. Sillaman wrote the book Pioneers: Eight Principles of Business Longevity from Immigrant Entrepreneurs.