Switzerland is the origin of numerous famous inventions, pioneering ideas and leading businesses.
For instance, who knew that the leading European supplier of sanitary technology is located in Switzerland? Who knew that a long list of inventions, from the World Wide Web as we know it to the Red Cross and Velcro, were all invented in Switzerland? Or that Switzerland's universities have been churning out a record number of patents over the decades?
In the tradition of our annual Swiss quizzes, here is the fourth edition just in time for Swiss National Day.