The best describes the contributions of frederick douglass during the civil war is : douglass was an abolitionist who encouraged the union to allow african american to enlist
Before his effort, the contribution of African American for the army was limited in the factory, when they labored to create military supply.
hope this helps
I think it’s duke William
The fall of Constantinople began with capture of the Byzantine empire's capitol by an invading Ottoman army. This downfall took place May 29, 1453, and is believed to mark the end of the Medieval period. The conquest of Constantinople also greatly impacted Christiandom, as the Muslim Ottoman armies were left unchecked.
