Why does the narrator say, ''the Emancipation Proclamation is the second Declaration of Independence

Because the proclamation of emancipation freed a portion of the population that was being oppressed, just as the declaration of independence sought to free the people from oppression.

Explanation:

The emancipation proclamation was issued after the civil war, abolishing slavery across the country and freeing African Americans from the oppression they suffered when they were slaves.

In this case, the emancipation proclamation can be compared to the declaration of independence because it stands against a tyrannical system that made blacks submissive to whites, similarly, the declaration of independence tried to prevent an oppressive system between the Americans and the English.

answer; no longer than a reasonable period of time;