Well-placed Union artillery held their fire when they saw men in blue uniforms approaching, and did not realize that these were from a Confederate unit which had not yet acquired their grey uniforms.
Because later a second battle happened by bull run creek( the second battle of bull run) so they gave them the 1st and 2nd to tell the difference.
yes
This was the unexpected Northern victory (after a string of successes by Robert E. Lee) that gave Lincoln the credibility to issue the Emancipation Proclamation, declaring that the Union was now waging war on slavery. This made it impossible for Britain to help the Confederates without looking pro-slavery.
Victory in this battle gave Lee and Jackson the confidence to try to invade the North.
He was generous in victory, and gave Lee no pretext to send the defeated Confederates into the hills to carry on extended guerrilla warfare out of revenge.
It was the long-awaited Northern victory that gave Lincoln the credibility to issue the Emancipation Proclamation, which had the important effect of keeping the British from helping the Confederates. So it was not good news for the South.
It was an unexpected Northern victory, which gave Lincoln the credibility to issue the Emancipation Proclamation, which turned it into a war on slavery, so no foreign power could intervene on the side of the Confederates without looking pro-slavery.
Scalawags.
It was more-or-less a draw. But the Confederates did retreat, and Lincoln fired McClellan for not pursuing and destroying them. However, this notional victory was important because it followed a string of defeats, and gave Lincoln the credibility to issue his Emancipation Proclamation, which had the effect of keeping Britain and France from helping the Confederates. (It would have made them look pro-slavery themselves.)
The unexpected Northern victory at Antietam (Sharpsburg). It gave Lincoln the credibility to issue the Emancipation Proclamation, which put a moral spin on the war, and made it ethically impossible for Britain and France to aid the Confederates.
The Confederate victory in the First Battle of Bull Run in Virginia was a surprise to everyone, including the South. It gave the Confederates hope that the Union was poorly prepared to fight a war to reunite the US. The following year, it can be said that both the North and the South were now in a situation where each was combat ready. The Second Battle of Bull Run again was a loss to the Union. The Southern forces under Confederate General Robert E. Lee simply outwitted Union General Joseph Hooker. This was another boast for the South and allowed them to have belief they would be successful in their bid for independence.
it is false