Given the reference text about the Emancipation Proclamation, approximately how many enslaved African Americans were freed?

The Emancipation Proclamation, officially Proclamation 95,[2][3] was a presidential proclamation and executive order issued by United States President Abraham Lincoln on January 1, 1863, during the Civil War. The Proclamation changed the legal status of more than 3.5 million enslaved African Americans in the secessionist Confederate states from enslaved to free. As soon as slaves escaped the control of their enslavers, either by fleeing to Union lines or through the advance of federal troops, they were permanently free. In addition, the Proclamation allowed for former slaves to "be received into the armed service of the United States".

Approximately 3.5 million enslaved African Americans were freed by the Emancipation Proclamation.