The Loyalist influx also created pressure for settlement land which pushed Nova Scotia's Mi'kmaq People to the margins as Loyalist land grants encroached on ill-defined native lands. Approximately 3,000 members of the Loyalist migration were Black Loyalists who founded the largest free Black settlement in North America at Birchtown, near Shelburne. However unfair treatment and harsh conditions caused about one-third of the Black Loyalists to combine forces with British abolitionists and the Committee for the Relief of the Black Poor to resettle in Sierra Leone. In 1792, Black Loyalists from Nova Scotia founded Freetown and became known in Africa as the Nova Scotian Settlers.