those slaves freed in Galveston Tx were the last slaves freed under the authority of Lincoln’s Emancipation Proclamation.
The Emancipation Proclamation only freed slaves in the rebel South. It was done as a form of economic warfare like the blockade. In a sense it still left human beings as a form of property. Technically & legally it could have been revoked. The 13th Amendment ended that and not just there but for as long as the US Constitution held sway.
The 13th made it national. It should celebrated as such.
Those who push this June teeth nationally have another agenda. I guarantee it’s not an America as a nation agenda.