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1850s - Wikipedia
Historic Timeline From 1850 to 1860 - ThoughtCo
U.S. Timeline, The 1850s - America's Best History
1850 in the United States - Wikipedia
Compromise of 1850 | Summary, Map, Facts, & Significance
Compromise of 1850 - Summary, Significance & Facts | HISTORY
9 Events That Led to the Civil War | HISTORY
The Civil War: The Nation Moves Towards War, 1850-61
Early abolition (article) | Khan Academy
14: Troubled Times- the Tumultuous 1850s - Humanities LibreTexts