Mohenjodaro. Since the first discovery of this civilization in 1920-21 at Harappa in the Indus Valley, hundreds of sites spread over more than a million square kilometres in the Indian subcontinent have been excavated, many of these are in Northern and Western India.
The immediate cause for World War 1 was the assassination of the Archduke Franz Ferdinand of Austria and his pregnant wife Sophie. Archduke Franz Ferdinand of Austria was the nephew of Emperor Franz Josef and heir to the throne of Austria and Hungary.
Historians do not agree on the exact date when World War II began. Most consider the German invasion of Poland on September 1, 1939, to be the beginning of the war. Others say it started when the Japanese invaded Manchuria on September 18, 1931. Others even regard World War I, which culminated in the Peace with the Central Powers in 1921 and World War II as parts of the same conflict, with only a breathing spell in between.