Answer:
Jim Crow said it. And it mean that he a racial person a horrible slur person he saying that White folks should be living and Black folks should be dying.
And this is signifance because Jim Crow laws were state that legalized racial segregation. And it relates to the world there's still alot of races people in Earth today
It was divided bc rome was now in 2 halfs the west and east side
To defend America was to defend the promise of the new world, which continentalists wanted to enter unreservedly
