What does it mean when a colony is indebted to someone?

if you say that you are "Indebted to someone"for something,you mean that you are very greatful to them for somathing

Explanation:

I hope it's help

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.