In 1955, the war in Vietnam begins. This will grow into a highly unpopular war and many people will openly speak out against it. Many see it as a unwinnable and pointless war to waste lives and money on.
The Sputnik satellite is launched on May 5th, 1957, causing a panic in the US about their lack of technological advancement.
Alaska becomes a state in 1959, the 49th state in the US, followed by Hawaii.