Final answer:
Yes, Congress did compromise on paying black soldiers by rectifying the discriminatory practice of lower wages for African American soldiers. In 1864, black soldiers started receiving the same pay as white soldiers and retroactive pay to 1863.
Step-by-step explanation:
Yes, Congress did compromise on paying black soldiers. Initially, African American soldiers in the Union army were paid lower wages than white soldiers. However, abolitionists and their Republican supporters in Congress worked to correct this discriminatory practice, and in 1864, black soldiers began to receive the same pay as white soldiers plus retroactive pay to 1863. This was an important step towards achieving equal treatment for black soldiers in the military.