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.
World War II began on 1st September 1939, as Germany invaded Poland. On 3 September, Britain, France, and the members of the Commonwealth declared war on Germany. They could not help Poland much and only sent a small French attack on Germany from the West.