Why did southerners believe that the british would support their move to secede from the union in 1860?

Southerners believed that the British would support their secession from the Union in 1860 due to economic interests, particularly in cotton production. The South supplied a significant portion of the cotton that British textile mills depended on, leading many Southerners to think that Britain would intervene on their behalf to secure this vital resource. Additionally, some Southerners viewed the British as potential allies against perceived Northern aggression, hoping that shared cultural and economic ties would prompt British support for their cause.