Final answer:
The late 19th-century American literary works reflect the changing political, social, and cultural climate of the era, as seen in Walt Whitman's 'O Captain! My Captain!' and the 'Declaration of Sentiments'. Both highlight the era's evolving democracy—through personal expression and a call for expanded rights.
Step-by-step explanation:
The American literary tradition of the late 19th century reflects a dynamic period of change in the United States, with evolution evident in political, social, and cultural realms. In comparing a 19th-century American poem to a historical document, we could analyze "O Captain! My Captain!" by Walt Whitman—a poem reflecting the mood of the nation post-Civil War, portraying the loss of President Lincoln—and the "Declaration of Sentiments", a landmark document from the first women's rights convention. Both texts represent the era's changing ideas of democracy: Whitman's poem underscores the end of the Civil War and sentiments of unity and loss, while the Declaration highlights the emergence of women’s rights and the broadening concept of democratic equality.
Whitman's piece is an example of how personal expression and the concerns of the larger American society became intertwined in poetry. The rhythmic and somber tone of the poem reflects the national mood of mourning. On the other hand, the Declaration of Sentiments is a more direct political assertion, challenging the status quo and pushing for the expansion of democratic rights, specifically for women, showcasing the societal push towards greater inclusiveness and recognition of rights for all citizens.