Good question.
Kentucky was one of the Border States - slave-states that had narrowly voted against joining the Confederacy, but clearly still at risk of doing so. Lincoln was so sensitive about this that he allowed Kentucky to stay neutral for the first year of the war.
In 1862, the Confederates invaded the state, and their commander, Braxton Bragg, was able to set up a Southern government there. At this point, the Confederates sewed a twelfth star into their flag, representing Kentucky.
However, this government collapsed as soon as Bragg retreated, and Kentucky finally, if reluctantly, declared for the Union.
Kentucky did not secede to the confederacy; for a time, it declared itself neutral
The Civil War for Kentucky was truly a civil war with brother against brother. The state itself, remained with the Union. A group of counties bordering Tennessee pulled out of Kentucky, declared Bowling Green the new capitol, and joined the confederacy. Some men from all over Kentucky joined Confederate units but more joined Union units. The Confederates used the guano from the caves in southern Kentucky to make gunpowder. When General Grant captured Nashville, Tennessee, he effectively removed Kentucky from the war.
since the confederacy was the south. the confederacy was opposed by the north
John J. Crittenden supported the Union and opposed the secession of Kentucky into the Confederacy using his popularity as a leader in the region. He also proposed several bills in the congress to help preserve the Union.
Delaware Maryland
Kentucky
Kentucky
Kentucky and Missouri
Kentucky, Missouri, Maryland, Delaware.
Kentucky did not secede to the confederacy; for a time, it declared itself neutral
Conflicting groups in Missouri, and a few in Kentucky.
Kentucky, Missouri, Maryland, Delaware
The Union made a concerted effort to assault all sources of salt used by the Confederacy. As an example, the Confederacy used salt works in neutral Kentucky. In 1862 the Union destroyed the Goose Creek Salt works near Manchester Kentucky.
George B. Crittenden led the Battle of Mill Springs in Nancy, Kentucky for the Confederacy.
Jefferson Davis, a native of Kentucky, was President of the Confederacy. United States President Abrahan Lincoln was also born in Kentucky!
The Northern slave-states of Kentucky and Missouri.
It was tempting for many Kentuckians to join the Confederacy. It was a slave state with a long southern border with the Confederate state of Tennessee. Also, about one half of the legislature was in favor of the Confederacy. To make things worse, not a single county within Kentucky was won by Abraham Lincoln.