The newly formed Republican Party stood against the expansion of slavery and won control of most Northern states (with enough electoral votes to win the presidency in 1860).
The Supreme Court tried unsuccessfully to resolve the issue of slavery in the territories with a pro-slavery ruling, in Dred Scott v. Sandford, that angered the North.
The Civil War began when Confederate General Pierre Beauregard opened fire upon Union troops at Fort Sumter in South Carolina.
At all times the great majority of Southern whites owned no slaves, and operated farms on a subsistence basis, serving small local markets.
Hundreds of local short haul lines were being consolidated to form a railroad system, that could handle long-distance shipment of farm and industrial products, as well as passengers.
After Cass' defeat in 1848, Illinois Senator Stephen Douglas assumed a leading role in the party and became closely associated with popular sovereignty with his proposal of the Kansas–Nebraska Act.
Many Southerners also realized that the climate of those territories did not lend themselves to the extension of slavery (it was not yet foreseen that the Central Valley in California would someday become a center of cotton farming).
In 1853, a fleet commanded by Commodore Matthew C. Perry arrived in Japan and forced the shogunate to sign a treaty with US, although Japanese fears of Russian encroachment also moved matters along.
They were easily repulsed by the Spanish authorities, and the last attempt ended in fifty Americans being captured and executed for piracy, including many men from the leading families of the South.
Whereas the North was dirty, dangerous, industrial, fast-paced, and greedy, pro-slavery proponents believed that the South was civilized, stable, orderly, and moved at a 'human pace.'
As an example of rising sectional tensions, days after delivering the speech, South Carolina Representative Preston Brooks approached Sumner during a recess of the Senate and caned him.
The Party was ideological, with a focus on stopping the spread of slavery, and modernizing the economy through tariffs, banks, railroads and free homestead land for farmers.
Dred Scott, a slave, had lived with his master for a few years in Illinois and Wisconsin, and with the support of abolitionist groups, was now suing for his freedom on the grounds that he resided in a free state.
Furthermore, the Supreme Court decided that the Missouri Compromise, which had been replaced a few years earlier by the Kansas-Nebraska Act, had always been unconstitutional and Congress had no authority to restrict slavery within a territory, regardless of its citizens' wishes.
[27] The decision outraged Northern opponents of slavery such as Abraham Lincoln and lent substance to the Republican charge that a Slave Power controlled the Supreme Court.
Anti-slavery speakers protested that the Supreme Court could merely interpret law, not make it, and thus the Dred Scott Decision could not legally open a territory to slavery.
[28] The seven famous Lincoln-Douglas debates were held for the Senatorial election in Illinois between incumbent Stephen A. Douglas and Abraham Lincoln, whose political experience was limited to a single term in Congress that had been mainly notable for his opposition to the Mexican War.
On his way to the gallows, Brown handed a jailkeeper a note, chilling in its prophecy, predicting that the "sin" of slavery would never be cleansed from the United States without bloodshed.
At Baltimore, 110 Southern delegates, led by the so-called "fire eaters," walked out of the convention when it would not adopt a platform that endorsed the extension of slavery into the new territories.
The Confederacy adopted a military strategy designed to hold their territory together, gain worldwide recognition, and inflict so much punishment on invaders that the North would grow weary of the war and negotiate a peace treaty that would recognize the independence of the CSA.
With great fanfare, these untrained soldiers set out from Washington DC with the idea that they would capture Richmond in six weeks and put a quick end to the conflict.
Despite pressure from the White House, McClellan did not move until March 1862, when the Peninsular Campaign began with the purpose of capturing the capitol of the Confederacy, Richmond, Virginia.
It was initially successful, but in the final days of the campaign, McClellan faced strong opposition from Robert E. Lee, the new commander of the Army of Northern Virginia.
The Union victory allowed Abraham Lincoln to issue the Emancipation Proclamation, which declared that all slaves in states still in rebellion as of January 1, 1863 were freed.
He attempted to invade Richmond from the north (McClellan had tried from the east), but the campaign ended in disaster at Fredericksburg when Burnside ordered waves of futile attacks against an entrenched Confederate position.
Burnside was replaced by General Joseph "Fighting Joe" Hooker in January 1863, but he proved unable to stop Lee and "Stonewall" Jackson at Chancellorsville in May.
Abraham Lincoln was angered by George Meade's failure to pursue Lee after Gettysburg, but decided to let him stay in command, a decision endorsed by Ulysses S. Grant who was appointed General-in-Chief of all the Union armies early in 1864.
He knew that the Union's strength lay in its resources and manpower and thus began to wage a war of attrition against Lee while Sherman devastated the West.
Although he thought Lincoln was too moderate regarding slavery, he worked well with the president and Treasury Secretary in handling major legislation that funded the war effort and permanently transformed the nation's economic policies regarding tariffs, bonds, income and excise taxes, national banks, suppression of money issued by state banks, greenback currency, and western railroad land grants.
The rickety railroad system was not designed for long-distance traffic (it was meant to haul cotton to the nearest port), and it steadily deteriorated until by the end practically no trains were running.