HistoryWorld provides very useful timelines for the history teacher and student.
First World War
http://www.timesearch.info/timesearch/defa...ewtext=extended
Second World War
http://www.timesearch.info/timesearch/defa...ewtext=extended
British Empire
http://www.timesearch.info/timesearch/defa...ewtext=extended
Cold War
http://www.timesearch.info/timesearch/defa...ewtext=extended
American Civil War
http://www.timesearch.info/timesearch/defa...ewtext=extended
American Presidents
http://www.timesearch.info/timesearch/defa...ewtext=extended
British Monarchs
http://www.timesearch.info/timesearch/defa...ewtext=extended
British Prime Ministers
http://www.timesearch.info/timesearch/defa...ewtext=extended
Inventions and Discoveries
http://www.timesearch.info/timesearch/defa...ewtext=extended
English Civil War
http://www.timesearch.info/timesearch/defa...ewtext=extended
Hundred Years War
http://www.timesearch.info/timesearch/defa...ewtext=extended
Sports and Games
http://www.timesearch.info/timesearch/defa...ewtext=extended
Travel & Transport
http://www.timesearch.info/timesearch/defa...ewtext=extended
Commerce & Industry
http://www.timesearch.info/timesearch/defa...ewtext=extended
Film
http://www.timesearch.info/timesearch/defa...ewtext=extended
Theatre
http://www.timesearch.info/timesearch/defa...ewtext=extended
Painting and Drawing
http://www.timesearch.info/timesearch/defa...ewtext=extended
Literature
http://www.timesearch.info/timesearch/defa...ewtext=extended
Migration
http://www.timesearch.info/timesearch/defa...ewtext=extended
A full list can be found here:
http://www.timesearch.info/timesearch/defa...d=timeline_menu
