The Green March 1975 Moroccoالمسيرة الخضراء 

The Green March 1975 Morocco
The story of the Green March,
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 province of Spanish Sahara to Morocco. The demonstration of some 350,000 Moroccans advanced several kilometres into the Western Sahara territory. Morocco later gained control over most of the former Spanish Sahara, which it continues to hold.