Final answer:
Nathan Hale's last words, 'I regret that I have only one life to lose for my country,' inspired the Continental Army during the Revolutionary War.
Step-by-step explanation:
The famous last words, "I regret that I have only one life to lose for my country," which inspired the Continental Army after their defeat at Brooklyn, were spoken by Nathan Hale. Hale was an American spy captured by the British and executed in 1776. His declaration served as a patriotic rallying cry and embodied the spirit of sacrifice that fueled the American cause during the Revolutionary War.