Americans like to laugh and (11) .In the United States and a few other countries the first of April, April Fool’s Day, is a day devoted to harmless practical jokes and (12) for every American to fool his friends and neighbors. When I was a college student, our daily college news paper always had a (13) April fool’s edition. It was surprising that many people believed these stories. But probably the (14) practical joke of all time was a national radio broadcast by Orson Wells. Mr. Wells told his audience that the Earth was being invaded by Mars: His description of this invasion from outer space was actually responsible for the (15) of several people.