Why did Lincoln establish martial law in Maryland, a border state, at the start of the Civil War? Question 13 options:

He identified a spy network and wanted to find those involved.

He was so angry over the secession of South Carolina that he became a military dictator, establishing complete control over the states remaining in the Union

Maryland also contained Washington, D. C., the nation's capitol. If Maryland seceded from the Union, the capitol would be surrounded by the enemy.

He wanted to take control of Fort Sumter so it could be re-supplied.