Final answer:
The Compromises of 1820 and 1850 failed due to Congress's inability to control state laws and the growing divide over slavery expansion, fueling tensions that led to the Civil War.
Explanation:
The Compromise of 1850 and the Compromise of 1820 were unsuccessful in solving the nation's issues primarily because:
- Congress could not control the states' desire to make their own laws,
- Dependence on slavery grew in the South while opposition to it grew in the North.
These compromises attempted to address the growing sectional tensions between the North and South over the expansion of slavery into new territories, leading to increased conflicts and ultimately paving the way for the Civil War.
Learn more about Causes of the Civil War