This music originated at the turn of the 20th century, became synonymous with the harlem renaissance, grew steadily in popularity through the start of the great depression, and is considered a uniquely american art form.

a) jazz
b) salsa
c) bluegrass
d) rock and roll

jazz

Explanation:

Jazz is defined as a genre of popular music that official originated in New Orleans around 1900.

No aspect of the Harlem Renaissance shaped America art form and the entire world as much as jazz. Jazz flouted many musical conventions with its syncopated rhythms and improvised instrumental solos. Thousands of city dwellers flocked night after night to see the same performers. Improvisation meant that no two performances would ever be the same.  

i believe the answer to your question is b. pay your bills early

bloodiest single day of war   |   gettysburg

where the civil war ends for good   | appomattox court house

the first major land battle; south wins | bull run/manassas (va)

gives union control of the mississippi river |   vicksburg

lee’s first tactical defeat; big win for union |   fort sumter1

with lincoln's re-election |   atlanta

south wins

splits confederacy in two for the duration of the war,

antietam