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.
Top 10 Inventions of the Middle Ages. The middle ages (5th â 15th Centuries AD), often termed The Dark Ages, were actually a time of great discovery and invention. The Middle ages also saw major advances in technologies that already existed, and the adoption of many Eastern technologies in the West. This is a list of the ten greatest inventions of the Middle Ages (excluding military inventions). 1. The Heavy Plough 5th Century AD.