Why was the battle of bull run significant for both the north and the south?

A both sides received help from different European countries in this battle
B it showed both sides that was going to cause problems during the war
C signified the end of the Civil War
D it showed both sides how much they needed proper training for their soldiers

B it showed both sides that was going to cause problems during the war

B was supposed to say it showed both sides that weather was going to cause problems during the war

Thank you for the correction. In that case, the correct answer is:

B) it showed both sides that weather was going to cause problems during the war

The Battle of Bull Run, also known as the First Battle of Bull Run, took place during hot and humid conditions, and both sides experienced logistical issues related to the weather, such as thirst, fatigue, and heatstroke. This served as a reminder to both the North and the South that weather conditions could significantly impact their military operations during the Civil War.