Which of the following contributed to the downfall of the Union army during the Battle of Bull Run? Select all that apply.

Break down of communication between Lincoln and General McDowell.

A shortage in the water supply along the march to Virginia.

The climate during the march to Virginia.

A lack of secrecy pertaining to the Union’s plans. 

Fatigue of the Confederate army. 

The arrival of Confederate reinforcements.

- Break down of communication between Lincoln and General McDowell

- A lack of secrecy pertaining to the Union’s plans
- The arrival of Confederate reinforcements