That was the day the Treaty of Guadalupe Hidalgo was signed.
It signaled the end of the Mexican-American War.
The war began in May 1846 when the United States sought to expand its annexation of Texas.
It immediately became a partisan issue between pro- and anti-slavery forces.
Southern Democrats and slave plantation owners favored war with Mexico.
They hoped to undercut rising Northern industrial power with the expansion of slave territory.
Whigs and Northern abolitionists opposed the war for the same reason.
After almost two years of fighting, the war ended.
In exchange for $15 million, the United States gained 525,000 square miles of land.
This territory included all or parts of Arizona, California, Colorado, Nevada, New Mexico, Utah and Wyoming.
Mexico gave up all claims to Texas and the Rio Grande was established as the border.
The initial Treaty promised protection of land and civil rights, and full citizenship for those Mexicans who stayed on the newly acquired territory.
These guarantees were deleted from the final ratification.
Expansionist aims reignited debates about the extension of slavery.
The newly formed Free Soil Party gained traction with its campaign “to limit, localize and discourage slavery.”
Their banner read “Free Soil, Free Speech, Free Labor and Free Men.”
Antagonisms were briefly tempered with the Compromise of 1850.
This allowed California to be admitted as a free state.
It also prevented the outlawing of slavery in the new territories.
The slave trade was banned in the District of Columbia.
But a new and more stringent Fugitive Slave Law was enacted.
Debates regarding expansion of slavery would rage on throughout the 1850s, culminating in the Civil War.
November 14 - The Origins of CWA
November 13 - The Holland Tunnel Opens
November 12 - Striking Against Privatization
November 11 - Haymarket Martyrs are Executed
November 10 - Suicide or Murder?
November 9 - Remembering Philip Murray
November 8 - Dorothy Day is Born
November 7 - Eisenhower Wields Taft-Hartley
November 6 - The Fight for Equality
November 5 - The Everett Massacre
November 4 - Will Rogers is Born
November 3 - The Greensboro Massacre
November 2 - Sixteen Tons
November 1 - The Deadly Consequences of Scabbing
October 31 - Happy Union Made Halloween
October 30 - Wall St. Lays an Egg
October 29 - Alice Doesn’t Day
October 28 - The Pony Express
October 27 - The 1948 Donora Smog
October 26 - America’s Florence Nightingale
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