What did francis Scott key do that was important?

Francis Scott Key wrote a poem when he saw that the American flag was still flying after a all night battle at Fort McHenrey during the war of 1812.The name of the poem that Key wrote was Star Spangled Banner.The Star Spangled Banner became our national anthem

The Star-Spangled Banner:

Oh__ say can you see

by the dawn's ear - ly lights

What so proud - ly we hail'd

at the twi - light's last gleam - ing

whose broad stripes and stars

through the per - il - ous fight

O'er the ram - parts we watch'd

were so gal - lant - ly stream - ing?

and the rock - ets' red glare

the bombs bursting in the air

gave proof through the night

that our flag was still there

oh, say does that_

star - span - gled ban - ner _

yet_ wave___ O'er the land________ of the free

and the home of the brave?