Greetings, I am the Imperial System, or also known as the American Customary System of Units. I am used widely in only 3 countries of the United States, Liberia, and Myanmar. I am also responsible for Fahrenheit (°F), when 100 degrees is originally defined as the body temperature of a healthy individual and 0 degrees is considered the coldest for the solution of brine, which is a form of salty water. If you have any questions, don't hesitate to ask!