Basketball was invented in 1891 by Dr. James Naismith. The objective is to shoot a ball through a hoop above the ground. The original 13 rules established the basics of play, fouls, and scoring. Common violations today include 24-second shot clock violations, traveling, and 3 seconds in the key. Common fouls are blocking, charging, illegal screens, and reaching in. Personal fouls result in free throw attempts, while technical fouls award free throws with no shot.