What was the Union's reason for fighting the civil war?

Well I dunno but I guess it has something to do with money, its always either money or goats.

Stop worshiping David Duke!

They were fired on.

The South was in rebellion and started the war by bombarding Fort Sumter. President Lincoln was doing his job by trying to stop the rebellion and keep the Union together.

To save the Union & democracy

To do away with slavery in America The anti slave movement started IN America and spread to the rest of the world and started before there was an America one of the last mandate of the king to his American colony was NOT to ban the importation of slaves into his colony one state did anyway and two did during the war of independence

It was written ''the right to pursue happiness'' as slaves were considered property at that time

Solidarity of the nation. "United we stand, divided we fall."

Executive Mansion,

Washington, August 22, 1862.

Hon. Horace Greeley:

Dear Sir.

I have just read yours of the 19th. addressed to myself through the New-York Tribune. If there be in it any statements, or assumptions of fact, which I may know to be erroneous, I do not, now and here, controvert them. If there be in it any inferences which I may believe to be falsely drawn, I do not now and here, argue against them. If there be perceptable in it an impatient and dictatorial tone, I waive it in deference to an old friend, whose heart I have always supposed to be right.

As to the policy I "seem to be pursuing" as you say, I have not meant to leave any one in doubt.

I would save the Union. I would save it the shortest way under the Constitution. The sooner the national authority can be restored; the nearer the Union will be "the Union as it was." If there be those who would not save the Union, unless they could at the same time save slavery, I do not agree with them. If there be those who would not save the Union unless they could at the same time destroy slavery, I do not agree with them. My paramount object in this struggle is to save the Union, and is not either to save or to destroy slavery. If I could save the Union without freeing any slave I would do it, and if I could save it by freeing all the slaves I would do it; and if I could save it by freeing some and leaving others alone I would also do that. What I do about slavery, and the colored race, I do because I believe it helps to save the Union; and what I forbear, I forbear because I do not believe it would help to save the Union. I shall do less whenever I shall believe what I am doing hurts the cause, and I shall do more whenever I shall believe doing more will help the cause. I shall try to correct errors when shown to be errors; and I shall adopt new views so fast as they shall appear to be true views.

I have here stated my purpose according to my view of official duty; and I intend no modification of my oft-expressed personal wish that all men every where could be free.

Yours,

A. Lincoln.