What did the first battle of bull run prove?

The First Battle of Bull Run was the first major battle of the Civil War. Although the Union forces outnumbered the Confederates, the experience of the Confederate soldiers proved the difference as the Confederates won the battle.

Explanation:

in 342 bc j._c. egypt fell into the hands of the persians, under the reign of nectanebo ii

greek city-states unite in a revolt against the persian empire at the beginning of the fifth century bc. j.-c  

from the year 660 or 659 bc ad, cyrus preached the revolt against the medes to deliver the persians.

c: in the east might be the correct answer