The War of 1812 significantly impacted American nationalism by fostering a sense of unity and patriotism among the citizens. Although the war was characterized by a lack of clear victory and considerable challenges, it enhanced national identity as Americans rallied around their young nation. Events such as the defense of Fort McHenry inspired Francis Scott Key to write "The Star-Spangled Banner," which became a national anthem symbolizing resilience. Additionally, the war encouraged domestic manufacturing as reliance on British goods decreased. Overall, the conflict helped solidify the notion of an American identity distinct from European influences.