The 25 most influential marriages of all time – See who made the list (+Photos)

Bill and Melinda Gates

In his garage, Harvard dropout Bill pondered why computer hardware was sold but computer software was just passed around. From that question grew Microsoft, where Melinda eventually went to work. Married in 1994, they created the largest private foundation in the world, and, with the “Giving Pledge,” successfully urged other billionaires to follow their philanthropic lead.