Sentence:  Thus at the same time that William Henry Harrison was preparing to <WSD>pacify</WSD> the aborigines of Indiana Territory and winning fame at the battle of Tippecanoe , Anglo-Saxon settlement made a great leap into the center of the North American continent to the west of the American agricultural frontier . 
Meaning of the word marked with <WSD> tags:  cause to be more favorably inclined; gain the good will of