As far as I could see while reading, the passage's main purpose is to reflect upon the challenges and hardships endured by Americans under the tyrannic, British rule. I hope that helps.
The answer is c I did that before
A.
Walt Whitman was an American romantic poet born in 1819 in New York.
A watershed is an area or ridge of land that separates waters flowing to different rivers , basins , or seas . I hope this helps