The author of the poem that in 1931 became the national anthem of the United States was? A) dolly madison
B) William Henry harrrison
C) Andrew Jackson
D) Francis Scott Key

D) Francis Scott Key

Explanation:

On September 14, 1814, Francis Scott Key pens a poem which is later set to music and in 1931 becomes America's national anthem, “The Star-Spangled Banner.” The poem, originally titled “The Defence of Fort M'Henry,” was written after Key witnessed the Maryland fort being bombarded by the British during the War of 1812.

it is the code of hammurabi

its c