The Civil War Part 2: Crash Course US History #21
Why the open web links it
Explains how the Civil War shaped the United States, focusing on Lincoln and the Union's victory.
Linked by 16 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including okstate.edu, libretexts.org, atlantahistorycenter.com, teachersfirst.org, askatechteacher.com.