A result of the work done by Rose O’Neal Greenhow during the Civil War was that many soldiers survived diseases they contracted. she became a trusted adviser to President Lincoln. the state of Virginia seceded from the Union. the Confederacy received important information.

umm i think its b

Explanation:

in 1862, president lincoln's emancipation proclamation opened the door for african americans to enlist in the union army. although many had wanted to join the war effort earlier, they were prohibited from enlisting by a federal law dating back to 1792.

explanation: