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
A. Italy
They were neutral until May 23, 1915
They showed them how to hunt. Colonists actually raided them and colonists thrived from John Rolfe bringing the tobacco seeds
The practice of vertical integration contributed most to Andrew Carnegie's ability to form a monopoly. Vertical integration is a process of combining different stages of production such as manufacturing, supplying, distributing, retailing, etc, under the umbrella of one company.