In the U.S., Congress passes a set of amendments to the Espionage Act called the Sedition Act, which makes "disloyal, profane, scurrilous, or abusive language" about the United States government, its flag, or its armed forces, as well as language that causes foreigners to view the American government or its institutions with contempt, an imprisonable offense. The Act specifically applies only during times of war, but later is pushed by politicians as a possible peacetime law, specifically to prevent political uprisings in African-American communities. But the Act is never extended and is repealed entirely in 1920.

Las Vegas, Nevada is founded when 110 acres of barren desert land in what had once been part of Mexico are auctioned off to various buyers. The area sold is located in what later would become the downtown section of the city. From these humble beginnings Vegas becomes the most populous city in Nevada, an internationally renowned resort for gambling, shopping, fine dining and sporting events, as well as a symbol of American excess. Today Las Vegas remains one of the fastest growing municipalities in the United States.

The animated character Mickey Mouse, along with the female mouse Minnie, premiere in the cartoon Plane Crazy, a short co-directed by Walt Disney and Ub Iwerks. This first cartoon was poorly received, however Mickey would eventually go on to become a smash success, as well as the most recognized symbol of the Disney empire.

In Peru, five-year old Lina Medina becomes the world's youngest confirmed mother at the age of five when she gives birth to a boy via a caesarean section necessitated by her small pelvis. Six weeks earlier, Medina had been brought to the hospital because her parents were concerned about her increasing abdominal size. Doctors originally thought she had a tumor, but soon determined she was in her seventh month of pregnancy. Her son is born underweight but healthy, however the identity of the father and the circumstances of Medina's impregnation never become public.

American film actress and dancer Margarita Carmen Cansino, aka Rita Hayworth, who became her era's greatest sex symbol and appeared in sixty-one films, including the iconic Gilda, dies of Alzheimer's disease in her Manhattan apartment. Naturally shy, Hayworth was the antithesis of the characters she played. She married five times, but none lasted. In the end, she lived alone, cared for by her daughter who lived next door.