[radicalamericannationalist]

Where does he say it. That trade and commerce can be used interchangeably is not in dispute. You appear to have argued that those phrases can only be used to refer to encouraging manufactures. That is a strained definition that is not supported by the Federalist Paper that you cite.

[tacticalogic]

He says it right here. You seem to be asserting that because he said it 40 years after he wrote the clause, this isn't necessarily what he meant at that time, even though he explicitly makes the point that this is exactly the case.