Now in its 152nd edition, The Statesman's Yearbook continues to be the reference work of choice for accurate and reliable information on every country in the world. Covering political, economic, social and cultural aspects, the Yearbook is also available online for subscribing institutions: www.statesmansyearbook.com .

Now in its 153rd edition, The Statesman's Yearbook continues to be the reference work of choice for accurate and reliable information on every country in the world. Covering political, economic, social and cultural aspects, the Yearbook is also available online for subscribing institutions: www.statesmansyearbook.com.

Now in its 151st edition, The Statesman's Yearbook continues to be the reference work of choice for accurate and reliable information on every country in the world. Covering political, economic, social and cultural aspects, the Yearbook is also available online for subscribing institutions: http://www.statesmansyearbook.com.

Now in its 150th edition, The Statesman's Yearbook continues to be the reference work of choice for accurate and reliable information on every country in the world. Covering political, economic, social and cultural aspects, the Yearbook is also available online for subscribing institutions: www.statesmansyearbook.com.

Now in its 149th edition, The Statesman's Yearbook continues to be the reference work of choice for accurate and reliable information on every country in the world. Covering political, economic, social and cultural aspects, the Yearbook is also available online for subscribing institutions: www.statesmansyearbook.com .

The material has been assembled and updated from my doctoral thesis, Social Causes of Violent Revolution in Eighty-Six Nations Since World War II, written in 1978 (found on the dissertation shelves of Norlin Library, University of Colorado, Boulder). In this current update, I have enlarged the scope of the project to include nonviolent revolutions as well. South Africa has been the obvious model here and suggests that the most successful revolutions in the world have indeed been nonviolent. There have been a few others as well in the latter part of the 20th and early 21st centuries. Examining the causes and developments preceding these revolutions and comparing them with political and social conditions today has convinced me that our own country may be facing some kind of radical social upheaval during the coming century. By examining more closely the causes of such upheavals in the world during the 20th century, I would hope we could then see how closely current conditions match those early ones. Remember that Thomas Jefferson said that this country would need a new revolution every twenty years. (God forbid we should ever be twenty years without such a rebellion, Thomas Jefferson wrote to William Stephons Smith in Paris on November 13, 1787).