About.com: Timeline of the 20th Century
From your About.com Guide, a decade-by-decade chronology of the twentieth century. 20th Century History: Year by Year
Infoplease.com offers this fantastic year-by-year and decade-by-decade history (scroll to the middle of the page) of the world during the 20th century.
Black History Timeline
Although this timeline begins in 1517, it focuses on black history of the 19th and 20th centuries, providing important milestones in black history in the United States. Century in Review
A great timeline for young people, created and written by elementary school students. General Chronology of Events
A different, yet interesting, timeline of the years 1900 to 1929. Includes events not typically found on the usual timeline. HistoryTimeline.com
A decade-by-decade history of the United States. Includes a brief vignette about each decade, a collection of images, and a listing of important dates. Use the links at the top of the timeline to navigate to additional decades. Media History Project Timeline
A fascinating timeline of important events in communications history - including cameras, telephones, computers, and more. Nuclear Age Timeline
A great timeline covering the major nuclear development (and non-development) milestones of the century. Each decade includes some textual information about the nuclear events of the decade. People's Century Timeline
This innovative timeline from PBS provides a handful of key events of the twentieth century, organized into over two dozen sub-timelines. Each of the timelines are clickable and provide timeline data in the window below the main timeline. Technology Timeline: 1752 - 1990
A fascinating timeline from PBS that provides a history of technology in a nutshell.
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