Mystery APUSH

Main Themes and Events of the 1840s and 1850s

Territorial Expansion in the 1840s

  • Significant territorial expansion occurred during the 1840s, leading to the acquisition of:

    • Texas

    • Oregon

    • California

    • Other neighboring territories

  • Key issue during this expansion involved the topic of slavery.

The Missouri Compromise

  • The Missouri Compromise established a crucial point in the discussion regarding slavery:

    • Drew an invisible line across the United States territory to determine free and slave states.

    • Areas south of the line were considered open to slavery (including Texas).

  • Relevance to newly acquired territories due to uncertainty about their status as free or slave states.

Popular Sovereignty

  • The concept of Popular Sovereignty was introduced, meaning that:

    • Residents of new territories should vote on whether to allow slavery.

    • Evoked significant debate and conflict as states like Kansas and Nebraska were considered.

  • Kansas was predicted to be a slave state while Nebraska was expected to be free.

The Admission of New States

  • The entry of California as a free state disrupted the balance aimed for by the Missouri Compromise.

    • Efforts to maintain balance between free and slave states became a rallying point for politicians.

Key Political Figures

  • William Henry Harrison:

    • Brief presidency and death from pneumonia shortly after inauguration due to a long, cold inaugural speech.

  • John Tyler:

    • Became president after Harrison’s death, known for having a tumultuous presidency and being viewed as a man without a party.

    • A former Democrat, he faced distrust from the Whigs, who initially backed Harrison.

  • Political Context:

    • Compromise and conflict within political parties, especially between Whigs and Democrats over issues like the Bank of the United States and tariffs.

John Tyler's Presidency and Policies

  • Tyler's approach was characterized by:

    • Assertion of presidential powers in adopting his agenda after Harrison’s death.

    • Disagreements with his own party (Whigs) over policies, leading to isolation and contempt from fellow Whigs.

    • Vetoed legislation for a new national bank despite promises made by the Harrison administration.

  • Expansionist policies were evident in Tyler’s attempts to annex Texas and negotiate terms with England over Oregon.

The Annexation of Texas

  • Issues concerning Texas’s annexation linked to:

    • Slavery: Texas declared itself a slave state, complicating the balance in Congress.

    • Foreign Relations: Diplomatic tension with Mexico, as they did not recognize the independence of Texas.

The Mexican-American War

  • Roots in territorial and political disputes, tied closely to Manifest Destiny ideologies:

    • President James K. Polk aimed for further expansion (California, New Mexico, and Texas).

    • The US attempted to purchase California and New Mexico, but negotiations broke down.

    • Disputed territories led to the conflict, with American troops being sent to the Rio Grande.

  • War initiated on May 13, 1846, after Polk claimed Mexican troops attacked American soldiers.

Treaty of Guadalupe Hidalgo

  • Signed in 1848, resulted in:

    • Mexico ceding a significant amount of territory to the United States (California, Arizona, Nevada, Utah).

    • Compensation to Mexico totaling $15 million and assumption of debts owed by Mexico to American citizens.

  • This treaty heightened debate over the expansion of slavery into new territories.

Implications of Territorial Expansion

  • Manifest Destiny was cited as justification for westward expansion and often intertwined with ideologies surrounding democracy and religion:

    • Newspaper articles popularized the notion of a divine right to expand.

  • Issues of slavery became increasingly contentious as new territories were integrated into the Union.

Key Concepts and Historical Developments

  • Differences in opinion led to emerging political parties, e.g., Free Soil Party advocating against the expansion of slavery.

  • By the 1850s, political tensions increased due to immigration, the treatment of Native Americans, and the legal status of new state admissions.

  • Significant population movements to the West over the course of the 1840s further complicated societal changes, introducing migrants from diverse backgrounds (e.g., Chinese workers in California).

Manifest Destiny and its Aftermath

  • The notion of a manifest destiny pushed forward the idea of U.S. territorial acquisition, increasing complexity in dealing with Mexican and Native American populations and global perceptions of American expansionism.

  • Despite the gains, the expansion did not bring harmony but instead laid foundational tensions leading into the Civil War.