They (wrongfully) believed that president James K. Polk's aggression was an attempt to extend slavery. They called it this to take away national support of the war.
Actually, he wanted California at all costs. He got away with it, but ultimately, the new acquired territories vs. slavery question led to the American Civil War.
The future states of California, Nevada, Utah, New Mexico and Arizona became a part of the US under the Treaty of Guadalupe Hidalgo which ended the Mexican American War.
Northerners who opposed the Civil War.
The nickname for American soldiers during the Mexican-American war was doughboys. The term came about when the soldiers marching through northern Mexico were covered with white, chalky dust.
Southerners sought to extend slavery, already established in Texas. Northerners feared that annexation of more slave territory would tip the uneasy balance in the Senate in favor of slave states-and prompt war with Mexico.
As the war was motivated by pro-slavery interests, northerners feared the acquired territory would be used by slavers (they did, especially on New Mexico and Texas). This eventually upset the balance of power between pro and anti slave interests and resulted in the American Civil War (1861-1865).
carpetbaggers
Carpet baggers
They were afraid that all acquired territories would become slave states.
Mexico has passed the boundary of the United States, has invaded our territory and shed American blood upon the American soil
many northerners believed that southerners wanted to take territory from Mexico in order to extend slavery
many northerners believed that southerners wanted to take territory from Mexico in order to extend slavery
To most people living in the US at the time, the Civil War as we know it today, was called the "war of rebellion.
No. Most northerners and republicans were against such war, as it was viewed as an attempt by Manifest Destiny believers and slave interests to increase slave territory.
About 1/5 of all northerners
Northerners call it the American Civil War - stressing that it was war within one nation. Southerners prefer to call it The War Between the States - making a demarcation between the Union and the Confederate states.
my mom
It revived disagreements because the Northerners believed Southerners wanted to expand slavery to new lands.