Answer:
The statement that indicates that "before the Civil War, public opinion was largely for union activity" is false.
Step-by-step explanation:
The American Civil war began in 1861 and ended in 1865. It was fought between the Union also referred as the North, and the Confederate, also referred as the South. During the pre-war era, the division between these two regions of the country was already latent, as the North states were pushing for the abolition of slavery in every state, while the Southern states defended their belief of a "right" to have people enslaved. It is false the notion that indicates that before the Civil War broke down the public opinion in the country was largely for union activity, as if that would have been the case, the War would probably had not occurred.