Answer:
B, Seeing the American flag flying above fort McHenry
Explanation:
The Star Spangled Banner is based off of the battle of McHenry, lines like "the bombs bursting in air" confirm it was indeed a battle. It was created when Francis Scott Key was watching the battle from his window, and he was focused on looking at if the flag was still there. Originally the Star Spangled Banner was called The Defence of Fort M'Henry
A contest offers prizes based on the skill of the entrant whereas a sweepstake offers prizes based solely on a chance drawing of entrants' names. In addition to advertising, advocacy advertising is used to communicate the views of the company on issues that affect society or business. The trade shows are displays where manufacturers, dealers, and buyers get together for demonstration and discussion.