<span>By gradually building up the sea power of the US Navy.</span>
It’s been a while since I’ve read the Odysseus, however, If I remember correctly, the harp upon returning home represents Odysseus’s happiness upon returning home after having endured a long journey (which will soon change in a later part of the story). I hope this helped !
Against all odds the union won. They were outnumbered by confederate soldiers but that did not stop them.