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Difficulty: HardManifest Destiny and Westward Expansion

"Resolved, That the present war with Mexico has its primary origin in the admission of Texas into this Union... and that it was unconstitutionally commenced by the order of the President... to the end of extending and perpetuating slavery, and for the national aggrandizement by conquest; and that the people of Massachusetts, and her representatives in Congress, are hereby bound to oppose the further prosecution of the war, and to promote by all constitutional means the restoration of peace."
— Massachusetts General Court, Resolutions on the War with Mexico, 1847

Which of the following historical developments in the late 1840s and 1850s most directly resulted from the sectional tensions described in the excerpt?

  1. The formation of the Free Soil Party, which campaigned to restrict the expansion of slavery into territory acquired from the Mexican Cession.Answer
  2. B
    The congressional implementation of popular sovereignty, which authorized the President to directly determine the slave status of new territories.
  3. C
    The secession of Southern states due to federal efforts to raise protective tariffs on Western agricultural products.
  4. D
    The passage of the Dawes Severalty Act to protect communal Native American land rights from Western homesteaders.

Answer

The formation of the Free Soil Party, which campaigned to restrict the expansion of slavery into territory acquired from the Mexican Cession.
The correct answer is correct because the acquisition of land from the Mexican-American War immediately triggered intense sectional debates over whether slavery should be permitted in the newly acquired territories. The Free Soil Party was formed in 1848 specifically to oppose the extension of slavery into these territories, directly reflecting the anti-slavery sentiments of Northern opponents of the war, such as the Massachusetts legislature.

Step-by-Step Solution

1
Analyze the provided primary source stimulus to identify its core argument.
The Massachusetts legislature opposes the Mexican-American War, asserting it was started unconstitutionally to acquire territory and expand slavery.
Understanding the anti-expansionist and anti-slavery stance of Northern opponents of the war is crucial for contextualizing the political consequences.
2
Connect the concerns over the expansion of slavery to political events in the late 1840s and 1850s.
The territorial acquisition of the Mexican Cession led to fierce debates in Congress (such as the Wilmot Proviso) and the creation of the Free Soil Party in 1848, which sought to keep the new territories free of slavery.
This directly aligns with the fears of the Massachusetts General Court that territorial expansion would extend and perpetuate slavery.
3
Evaluate the incorrect options against the historical record and identify misconceptions.
Popular sovereignty did not give the president power over territorial slave status; secession was driven by conflicts over slavery rather than tariffs; the Dawes Act was passed in 1887 and aimed at assimilation, not protecting communal land rights.
Eliminating incorrect distractors validates the choice of the correct option.

Key Concept

The connection between Manifest Destiny, territorial expansion, and the escalation of sectional tensions over slavery.
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Topics

Manifest Destiny and Westward Expansion

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