The Green March
was a strategic mass demonstration in November 1975,
coordinated by the Moroccan government, to force Spain
to hand over the disputed, autonomous semi-metropolitan Spanish
Province of Sahara to Morocco.
Up to 350,000 unarmed Moroccans joined with 27,000 soldiers marched to the Western Sahara border calling for the disputed territory to be returned to Morocco.
"Some people qualify it as “the miracle of the century;” others as the “most striking peaceful march in human history.” But the 1975 Green March is much more than that. It is the unifying factor for a new, ambitious post-colonial Morocco."
Morocco World News 6 November 2014