What unified the north and made it determined to preserve the union military force?

Answer 1

The North's determination to preserve the Union was largely unified by a sense of nationalism and the belief in the principles of democracy and equality. The threat posed by the secession of Southern states and the potential spread of slavery galvanized public sentiment, leading to a collective effort to maintain the integrity of the nation. Key events, such as the attack on Fort Sumter and the Emancipation Proclamation, further solidified this resolve, as they framed the conflict not just as a fight to preserve the Union, but also as a moral imperative to end slavery.