Answer:
Primary source.
Explanation:
As this particular piece of literature was written by Fredrick Douglass himself, it is considered a primary source.
As per source of: https://libguides.ithaca.edu/research101/primary
"A primary source provides direct or firsthand evidence about an event, object, person, or work of art."
The Lasting Contributions of Rome. The Romans invented cement, which was stronger than stone and designed huge arches and domes with it. They also used concrete to build more than 50,000 miles of roads. This helped unify the empire.
Twelve countries were involved in WWI.
