Final answer:
The correct answer is option C) 200,000; 20,000.
Step-by-step explanation:
The correct option that fills in the blanks regarding the numbers of African Americans and Hispanic soldiers who fought for the Union during the American Civil War is C) 200,000; 20,000. Throughout the war, close to 200,000 African American men served in the Union army after the Emancipation Proclamation allowed their enlistment. Many of these men were formerly enslaved and used the opportunity to fight for the liberation of all slaves and the end of slavery.
Regiments such as the prestigious Fifty-Fourth Massachusetts proved their valor in combat. While the number of Hispanic soldiers who fought in the Civil War is less documented, it is generally recognized that approximately 10,000 Hispanic soldiers fought in the conflict, making option C the most accurate answer.