Answer:
Virginia
Step-by-step explanation:
Memorial Day ( previously called Decoration Day ) is a federal holiday in the United States. The holiday is in honor of fallen soldiers who served in the American Armed Forces. It is observed on the last Monday of May.
On June 3, 1861, the very first grave of a soldier fallen in the Civil War was decorated in Warrenton, Virginia. The tradition continued then in Georgia and Pennsylvania and then spread to more states.
There are two other holidays to celebrate the service of U.S. military veterans: Veterans Day and Armed Forces Day.