in his “address at the opening ceremonies of the brooklyn bridge” seth low predicts that new york will prosper as a result of the brooklyn bridge. what is the most effective evidence for predicting such a future?

by referring to the effects of the Erie Canal

Explanation:

"As the water of the lakes found the salt sea when the Erie Canal was opened, so surely will quick communication seek and find this noble Bridge, and as the ships have carried hither and thither the products of the mighty West, so shall diverging railroads transport the people swiftly to their homes in the hospitable city of Brooklyn. The Erie Canal is a waterway through the land connecting the great West with the older East. This Bridge is a landway over the water, connecting two cities bearing to each other relations in some respects similar." It talks about and shows what Erie Canal did in comparison to the bridge.

thinking about things and referring to books instead of acting on superstition and gossip.