Answer:
The First Battle of Bull Run (called First Manassas in the South) cost some 3,000 Union casualties, compared with 1,750 for the Confederates.
Step-by-step explanation:
The First Manassas or Bull Run resulted in thousands of lives lost and is referred to as the first major land battle of the American Civil war. It was also highly crucial as two inexperienced armies fought on the battlefield for the first time.
Scarcely three months later, however, events near the small Virginia community of Manassas Junction shocked the nation into the realization that the war might prove longer and more costly than anyone could have imagined--not only to the armies, but to the nation as a whole.