Here's a reason why: Africans were strangers to the Americans. Because the Africans were poor, they didn't have any allies to watch out for them or to protect them.
Popular fervor led President Lincoln to push a cautious Brigadier General Irvin McDowell, commander of the Union army in Northern Virginia, to attack the Confederate forces commanded by Brigadier General P.G.T. Beauregard, which held a relatively strong position along Bull Run, just northeast of Manassas Junction.
The red sa has a shoreline along the Eastern Boundary of Eritrea.