The ancient
Kingdom of
Ghana was
formed by a
group of tribes in

Soninke

Explanation:

Evidence of Ghana's occupation dates back to the 4th century, but it was several hundred years later that it became established as a nation by a tribe known as the Soninke, whose leaders have been credited with the early strengthening of the Wagadugu state and the expansion of its territories.

d.summerains, the last one

its main object was the establishment of "settlement houses" in poor urban areas, in which volunteer middle-class "settlement workers" would live, hoping to share knowledge and culture with, and alleviate the poverty of, their low-income neighbors.