Answer:
Step-by-step explanation:
The following passage (paragraph 19) adds to the development of Bush's speech mainly by providing a compelling example of the heroism and sacrifice displayed by American soldiers in Iraq. The passage describes the actions of Sergeant Leigh Ann Hester and her fellow soldiers, who fought bravely against a larger and better-equipped enemy force, ultimately repelling the attack and saving countless lives. By highlighting the bravery and dedication of these soldiers, the passage reinforces Bush's message that the war in Iraq is a just and necessary cause, and that the sacrifices made by American servicemen and women are not in vain.