Following World War II, the United States began to explore rocket technology using German V-2 missiles, but military leaders still believed bombers were better suited to their needs.

The Soviet Union, on the other hand, focused much greater attention on the development of rockets and ballistic missiles. With the launch of Sputnik in 1957, Americans began to fear they were lagging behind Soviet scientists in technology.

The competitive nature of the Cold War quickly fueled the creation of intercontinental ballistic missiles (ICBMs), lunar landers and space stations -- and eventually gave birth to important inventions like the computer. In 25 short years, the world evolved from primitive rockets to manned missions to the moon.

But where would we be today in terms of technology without the impetus of the Cold War?

Below is a selection of three possible scenarios. To begin, choose a course of action for a post-World War II United States.

In each section, compare the "alternate history" to historic fact by clicking on the "reality check" button.