Sassafras root is still used to flavor traditional root beer, although since sassafras was banned by the U.S. Food and Drug Administration because of the carcinogenicity of its constituent safrole, most commercial recipes do not contain sassafras. Some commercial root beers do use a safrole-free sassafras extract.
There are usually 18 holes in a golf course; some have 9 holes or some multiplier of 9 holes. I have played at golf clubs with 9, 18, 27 and 36 holes. However, a standard round of golf at most golf clubs / courses involves 18 holes.
Par is the number of strokes, or hits, a golfer is allowed for one particular hole. All of strokes are added up to give the course a total par, such as 70 or 72 for 18 holes. A golfer is said to shoot par if they use the exact number of shots to hit the ball from the tee box and into the cup on the green.