Follow this timeline to chart the key events and figures. Nearly 50 million men would register for the draft during WWII. Before Pearl Harbor, the US military had been totally unprepared for a ...

A time graph is a line graph which shows you data that has been collected over a period of time. There is a title which tells you what the data in the time graph is about. The horizontal (X ...

Follow this timeline to chart the evolution of the park system, and the history of the parks. The information in this timeline was gathered in 2009. Explore historical images of the national parks ...