1. AP US History This Day in American History October 30 1893 – the last day of Chicago's World's Columbian Exposition, a great fair that celebrated the 400th anniversary of Columbus's arrival in the New World and offered fairgoers a chance to see the first gas- powered motorcar in the United States: the Daimler quadricycle. The exposition introduced Americans to all kinds of technological wonders.

2. AP US History This Day in American History October 30 1938 - Orson Welles causes a nationwide panic with his broadcast of "War of the Worlds"—a realistic radio dramatization.

3. AP US History This Day in American History October 30 1974 – 32-year-old Muhammad Ali becomes the heavyweight champion of the world for the second time when he knocks out 25-year-old champ George Foreman in the eighth round of the "Rumble in the Jungle," a match in Kinshasa, Zaire. Seven years before, Ali had lost his title when the government accused him of draft-dodging and the boxing commission took away his license. His victory in Zaire made him only the second dethroned champ in history to regain his belt.

4. AP US History This Day in American History October 30 1991 – the so-called "perfect storm" hits the North Atlantic producing remarkably large waves along the New England and Canadian coasts. Over the next several days, the storm spread its fury over the ocean off the coast of Canada. The fishing boat Andrea Gail and its six-member crew were lost in the storm. The disaster spawned the best-selling book The Perfect Storm by Sebastian Junger and a blockbuster Hollywood movie of the same name.