APUSH UNIT 5 - MANIFEST DESTINY, CIVIL WAR RECONSTRUCTION

How did Manifest Destiny contribute to sectional conflict?

It justified territorial expansion, forcing the question of whether slavery would expand. Mechanism: each new territory required a decision on slavery. Effect: intensified North–South tensions and made compromise increasingly unstable.

Why was the Election of 1844 a turning point?

It signaled national support for expansion. Mechanism: Polk’s victory prioritized territorial growth. Effect: expansion became directly tied to the slavery debate, accelerating sectional conflict.

How did James K. Polk escalate sectional tensions?

His aggressive expansion policies (Texas, Oregon, Mexico) increased territory. Effect: forced repeated confrontations over slavery, destabilizing the political balance.

How did the Annexation of Texas lead to war and conflict?

It added a slave state and provoked Mexico. Mechanism: disputed borders + slavery expansion fears. Effect: led to war and intensified sectional divisions.

How did the Rio Grande boundary dispute trigger war?

Conflicting territorial claims created a military flashpoint. Effect: provided immediate cause for the Mexican–American War, showing expansion could escalate into armed conflict.

Why was the Mexican–American War more significant politically than territorially?

It reopened the slavery expansion issue. Mechanism: massive land gains required political decisions. Effect: triggered sectional crisis rather than unity.

How did the Treaty of Guadalupe Hidalgo intensify sectional conflict?

It added vast territory. Effect: forced Congress to confront slavery expansion, deepening polarization.

Why was the Mexican Cession a turning point?

It made sectional conflict unavoidable. Mechanism: large new territories required organization. Effect: intensified debates that compromise could not resolve.

How did the Wilmot Proviso reveal political breakdown?

It failed but exposed sectional voting patterns. Effect: demonstrated collapse of national unity and rise of sectional politics.

How did Free Soil ideology reflect economic motivations?

It opposed slavery to protect white labor. Effect: showed antislavery sentiment was often driven by economic competition, not just morality.

How did the Free Soil Party contribute to political realignment?

It nationalized the slavery issue. Effect: laid groundwork for the Republican Party and sectional polarization.

How did the concept of Slave Power intensify Northern resistance?

It framed slavery as dominating federal policy. Effect: increased distrust and justified political opposition.

Why does the Oregon Treaty matter for comparison?

It resolved expansion peacefully. Effect: highlights that conflict with Mexico was a choice, not inevitability.

How did the Gadsden Purchase show economic motives behind expansion?

It aimed to support a southern railroad. Effect: demonstrated expansion was driven by commercial interests, not just ideology.

Why did popular sovereignty fail as a solution?

It delegated slavery decisions to settlers. Mechanism: encouraged migration and competition. Effect: led to violence instead of compromise.

How did the Compromise of 1850 increase long-term tension?

It temporarily reduced conflict but satisfied neither side. Effect: deepened mistrust and delayed, rather than solved, the crisis.

How did the Fugitive Slave Act radicalize the North?

It forced citizens to participate in slavery enforcement. Effect: increased Northern opposition and sectional hostility.

How did personal liberty laws escalate conflict?

They resisted federal authority. Effect: intensified constitutional conflict over states’ rights vs federal power.

How did the Underground Railroad affect sectional relations?

It directly undermined slavery. Effect: increased Southern fear and justification for stricter laws.

Why was Uncle Tom's Cabin significant?

It shaped public opinion. Effect: mobilized Northern antislavery sentiment and widened sectional divide.

How did the Kansas–Nebraska Act mark the failure of compromise?

It repealed the Missouri Compromise. Effect: showed compromise was no longer sustainable and accelerated conflict.

Why was Bleeding Kansas a critical turning point?

It showed popular sovereignty led to violence. Effect: previewed the Civil War.

How did the John Brown's raid on Harpers Ferry intensify sectional fear?

It demonstrated willingness to use violence against slavery. Effect: convinced the South that abolition threatened their survival.

How did the Republican Party reflect sectional realignment?

It was built on opposition to slavery expansion. Effect: marked collapse of national parties into sectional ones.

How did the Dred Scott v. Sandford eliminate political solutions?

It ruled Congress couldn’t restrict slavery. Effect: made compromise impossible and pushed conflict toward war.

Why did the Election of 1860 trigger secession?

Lincoln won without Southern support. Effect: confirmed sectional division and led Southern states to leave the Union.

How did Union vs Confederacy advantages shape the war’s outcome?

Union had greater resources; Confederacy had defensive advantage. Effect: war became one of attrition, favoring the Union long-term.

How did the Anaconda Plan reflect changing war strategy?

It targeted the Southern economy and infrastructure. Effect: signaled shift toward total war.

Why was the Battle of Antietam strategically important?

It enabled policy change. Effect: allowed Lincoln to issue the Emancipation Proclamation.

How did the Emancipation Proclamation transform the war?

It redefined the war as a fight against slavery. Effect: prevented foreign recognition of the Confederacy and allowed Black enlistment.

How did the United States Colored Troops impact the war and its aftermath?

Strengthened Union forces. Effect: reinforced claims for citizenship and rights.

How did the Thirteenth Amendment represent change?

It ended slavery. Effect: transformed legal status but did not ensure equality.

How did Black Codes demonstrate continuity?

They restricted freedom. Effect: maintained racial hierarchy despite emancipation.

How did the Freedmen's Bureau show limits of federal power?

It provided aid but lacked resources. Effect: limited long-term impact on equality.

How did the Fourteenth Amendment transform federal authority?

It defined citizenship and equal protection. Effect: expanded federal power and legal foundation for civil rights.

How did the Reconstruction Acts represent peak federal intervention?

They imposed military control in the South. Effect: temporarily enforced civil rights.

Why was the Fifteenth Amendment limited?

It lacked enforcement. Effect: allowed continued voter suppression.

How did sharecropping maintain economic inequality?

It kept freedpeople in debt cycles. Effect: recreated dependency similar to slavery.

How did the crop-lien system reinforce inequality?

Farmers borrowed against future crops. Effect: entrenched long-term debt and poverty.

Why was the Compromise of 1877 a turning point?

It ended federal intervention. Effect: allowed rise of Jim Crow and abandonment of Black rights.

How did expansion lead to the Civil War?

Expansion → slavery debate → failed compromises → political realignment → violence → secession.

What changed and what stayed the same for African Americans after the Civil War?

Change: legal freedom and citizenship. Continuity: economic dependency and social inequality.

Why did Reconstruction ultimately fail?

Federal withdrawal + Southern resistance + Northern shifting priorities. Effect: collapse of protections and rise of segregation.