Whether once separated by physical walls or split by existing political ones, today's leaders in China, the United States and Europe -- including newly elected members of the U.S. Congress -- should also think about how much has been and can be accomplished when walls come down, and engagement flourishes.

Jack Ma, founder of Alibaba Group and reportedly the richest man in China, saw his wealth soar with the successful launch of Alibaba’s initial public offering. While the IPO offers insights into global financial trends, it also provides a unique perspective on how income inequality is affecting citizens across the globe.