Another cause of sore throat is allergies that promote postnasal drip. There are, however, more serious conditions of the sinuses and throat that may cause the throat to be sore. If you are experiencing an ongoing sore throat, ask your ear, nose, and throat specialist to examine you.
1907: Samuel Simon patented the first screen printing method in Manchester, England, which was most commonly applied to wallpaper and expensive fabrics. He used rubber bands or squeegees, which are still commonly used in the screen printing process today.
In the 1400s Johannes Gutenberg of Germany invented a new method of printing. It used movable type-metal letters that could be arranged and rearranged to form words. It also used a machine called a press. His method was so good that very few improvements were made to it for 400 years afterward.