How does the letter support macgregor’s point? it demonstrates how willingly japan agreed to trade with the united states. it gives an example of a different interpretation of the wave in the artwork. it provides an illustration of how the us navy threatened to use force to open japanese ports. it describes japan’s reaction to the united states’ forceful letter.

It provides an illustration of how the US Navy threatened to use force to open Japanese ports.

Explanation:

One thing the citation from Christine Guth does is bolster MacGregor's point about The Great Wave.  It does this with the utilization of a smart interpretation.  Through elucidation, the wave can be viewed as a way in which travel just as exchange can take place.  Too, Japan can be secluded by this wave as indicated by the understanding.

its structered sequentially i think