In Africa, Nigeria has had border disputes with Chad and Cameroun which almost led to a war situation but which Shagari cautiously avoided. Shagari's government was a great supporter of ECOWAS and alloted a plot for the building of its headquarters in Abuja. But despite Shagari's government scores in making peace with its neighbors, it exiled undocumented immigrants who were mostly Ghanaians in 1983. Even though popular with Nigerians, the action was widely criticized by commentators. It is known as Ghana Must Go, the Deportation of West African migrants from Nigeria