<Ul> <Li> Mississippi secedes from the Union . </Li> <Li> South Carolina state troops at Charleston fire upon the merchant ship Star of the West and prevent it from landing reinforcements and relief supplies for Fort Sumter . After being struck twice, the ship heads back to New York . </Li> </Ul> <Li> Mississippi secedes from the Union . </Li> <Li> South Carolina state troops at Charleston fire upon the merchant ship Star of the West and prevent it from landing reinforcements and relief supplies for Fort Sumter . After being struck twice, the ship heads back to New York . </Li> <Li> January 10: Florida secedes from the Union . </Li>

What were the major factors that led to northern victory in the civil war