Sentence:  This, joined with Enlightenment philosophies about progress and prosperity, led to a rise in formal <WSD>settlerism</WSD> (where governments encouraged migration to colonies) and informal <WSD>settlerism</WSD> (individuals encouraging family and friends to join them in the colonies) along with a new desire by people of the middling and lower classes to transform these new countries into homelands. 
Meaning of the word marked with <WSD> tags:  An ideology extolling the virtues bettering oneself by becoming a settler in an undeveloped new country.