Question

What event caused four additional Southern states to secede from the Union?

The U.S. accepted West Virginia as a state.

The South fired on Fort Sumter.

Lincoln declared the Emancipation Proclamation.

Lincoln raised an army.

Answer 1

[AI-generated answer — Bot GPT 3.5]

The event that caused four additional Southern states to secede from the Union was Lincoln's declaration of the Emancipation Proclamation.