to make the parks accessible to all and to preserve them for future generations. Follow this timeline to chart the evolution of the park system, and the history of the parks. The information in ...

And just as boomers were coming of age into adulthood, drafts for the Vietnam War began. This timeline looks at events and people that made the news in each year of the boomer generation.

First- and second-generation share of the population, 1900-2018 % of U.S. population who are __ immigrants Source: 1900-1950 data from Edmonston and Passel (1994); 1960-2000 numbers from Pew Research ...