Complaint Ratios: the ratio, expressed as a percentage, is the number of closed confirmed complaints divided by the number of policies the company had in force for the line of insurance and year indicated.
Thomas Edison invented the first ever light bulb in 1880. This is arguably the most important invention in the history of mankind. Britain underwent an Industrial Revolution that helped Britain's economy greatly during the Victorian Era.
5 Most Important Inventions of all Time. The world as we know it today is convenient and fun to be in because of certain inventions which have made all the difference from being medieval to being modern humans. Here are the 5 most important inventions of all time which have truly made their own marks in history. Telephone.