original_query: According to historian Walter O'Meara, what was the significance of this fort in the chain of strongpoints on the west side of the Susquehanna River?
query: According to historian Walter O'Meara, what was the significance of Fort Granville in the chain of strongpoints on the west side of the Susquehanna River?
answer: According to historian Walter O'Meara, Fort Granville was an important link in the chain of strongpoints on the west side of the Susquehanna River, commanding the point where the Juniata falls through the mountains.