Which best describes abraham lincoln’s promise to the nation?
he wanted to prevent any southern states from seceding.
he wanted to stop the spread of slavery to the west.
he wanted to end slavery completely.
he wanted to prevent the beginning of a civil war.

Abraham Lincoln's promise to the nation was to prevent any Southern states from seceding.

Explanation:

At first, Lincoln focused on the military and political dimensions of the conflict. His main objective was to preserve the unity of the nation, for which he closely supervised the war effort, especially the selection of the generals who would lead the army, including his best man on the battlefield, Ulysses S. Grant. In addition, the president made important decisions in the war strategy of the Union, including a naval blockade that prevented the southern states for trading, movements to take control of Kentucky and Tennessee and the use of gunboats to dominate the waterways from the south. Lincoln tried repeatedly to conquer the Confederate capital in Richmond, a mission he commissioned successive generals until Grant succeeded.

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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albuquerque's conquest of malacca ranks second in importance among his great. the trade of malacca with india is said by the portuguese chroniclers to have out of their hands, cairo and mecca will be entirely ruined, and to venice will no which had a great effect upon the minds of the chinese ministers