"O Captain! My Captain" is written about which historical figure?

• O Captain! My Captain:- এটি একটি elegy.- এই elegy টি President Abraham Lincoln কে নিয়ে লিখা।- It celebrates the end of the American Civil War.• Walt Whitman:- তিনি একজন American poet.- তিনি একাধারে একজন poet, journalist এবং essayist.• Notable works: - Calamus,- Crossing Brooklyn Ferry,- Democratic Vistas,- Drum-Taps,- I Sing the Body Electric,- O Captain! My Captain!,- Sequel to Drum-Taps,- Song of Myself,Source: Britannica.