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.
Woodblock Printing and Movable Type Printing. Printing is listed as one of the four great inventions of ancient China. The earliest surviving printed text in China dates from before 220 CE (while in Egypt from the 4th century). The text was a few woodblock printed fragments of silk from the Han Dynasty. The earliest example of woodblock printing on paper is dated in the mid-7th century. Printing on paper became popular in Tang Dynasty, with the earliest extant complete printed book, the Diamond Sutra in 868, found at Mogao Grotto.