No
In which year was Maryland was accepted into the union?
April 28, 1788
April 28, 1788
Most didn't, for obvious reasons. Do you mean 'Which slave-states did not leave the Union?' They were Missouri, Kentucky, Maryland and Delaware.
Union. Maryland was an Union Border state but this counted Union of course.
Union
The union won the battle Antietam in Maryland. It was the bloodiest battle in the war.
Missouri, Kentucky, Delaware and Maryland were border states that remained in the union but still allowed slavery. The state legislatures of Kentucky, Delaware and Maryland voted to remain. Missouri voted to leave the union but union troops stormed the state capital and installed a pro union government to insure they remained with the union. Prior to the Emancipation Proclamation captured slaves were returned to their masters in Missouri, Kentucky, Delaware and Maryland and in fact there are records of the Union Army conducting slave auctions in the border states.
Maryland joined the Union on April 28th, 1788. It was the seventh state to join the Union.
No - Maryland was a Union state
Abraham Lincoln suspended Habeas Corpus at the beginning of the Civil War. Since Maryland was a border state and close to Washington, DC, authorities would have able to arrest anyone who attempted to cause the state to secede from the Union. Lincoln sent Federal troops to Maryland. He made it clear that Maryland should not leave the Union. Although there were many people in Maryland who wanted to join the South, there was not enough to bring the state into the Confederacy.