When northern soldiers proclaimed they were fighting to "save the union," what did that really mean? the union is an idea or concept. why would men be willing to suffer so much for something so vague?

- Northern Soldiers were concerned about their future and about what would happen if secession was accepted.

Explanation:

This statement is relating to the "Civil War" that was a battle between the north representing union and the south representing confederacy. The battle was chiefly aimed against the enslavement of black people. It included around 2.75 soldiers who fought in this war which continued for four long years from 1861 to 1865. As per the question, when the soldiers proclaimed that they were fighting to "save the union" they conformed that the union is not mere a concept but a powerful and dominating idea that is controlling these soldiers. They were willing to suffer so much as they were concerned about their future and the consequences if secession was accepted.

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