Sentence:  Thus at the same time that William Henry Harrison was preparing to pacify the aborigines of Indiana Territory and winning fame at the battle of Tippecanoe , Anglo-Saxon settlement made a <WSD>great</WSD> 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:  relatively large in size or number or extent; larger than others of its kind