* To preserve the Union: The northerners were committed to maintaining the United States as a single nation, and they saw the secession of the southern states as a threat to this goal. They believed that the southern states had no right to leave the Union, and they were willing to fight to prevent them from doing so.
* To end slavery: Many northerners were opposed to slavery, and they saw the Civil War as an opportunity to finally put an end to this practice. They believed that slavery was morally wrong, and they were determined to free the enslaved people in the southern states.
* To protect the rights of African Americans: The northerners were also concerned about the rights of African Americans, and they saw the Civil War as an opportunity to improve their lives. They believed that African Americans should have the same rights as whites, and they were willing to fight to ensure that this happened.
* To maintain the economic strength of the North: The northern states had a much stronger economy than the southern states, and they were concerned about the potential loss of this economic advantage if the southern states seceded. They believed that the southern states were dependent on the North for economic survival, and they were willing to fight to prevent them from becoming economically independent.
The northerners' victory in the Civil War resulted in the preservation of the Union, the end of slavery, and the protection of the rights of African Americans. These were all major victories for the northerners, and they helped to shape the United States into the nation it is today.