- African American soldiers and a white commanding officer
Explanation:
The 54th Massachusetts Volunteer Infantry Regiment was an infantry regiment made up of African American men enlisted by white officers. The infantry regiment is a division of an army engaged in foot (foot soldiers) combat battle. During the American Civil War, the 54th Regiment served in the Union Army. After the First Kansas Colored Volunteer Infantry Regiment, it was the second African American regiment.
The oil crisis was when Iranian Oil no longer was sold in the U.S. and it was a problem because that was where the oil came from and caused a shortage. I'm gonna say the first one?