Answer:a better understanding of potential research problems
Explanation:
A. They were trying to find a trade route to make trading easier, so they explored a whole lot more.
B. The Colombian Exchange contributed to the rise of slave trade because when they picked up goods, they just piled 100 or so slaves in the bottom deck. Once a few people had some, many others began to want them and supply and demand skyrocketed. It was easy because the slaves had a different skin color and spoke a different language. The Europeans did not see them as people.
Answer:
Black troops made an important percentage of the total Union Army force, around 10% of the Northern armies, according to historians. Some 180,000-200,000 African American men - some former slaves, some free before the war - fought in the Union´s ranks between 1863 and 1865. Only after the Emancipation Proclamation of 1863, military service was opened for black men, both as soldiers and officers. There were many racist prejudices against them, but black troops fought with heroism and courage in some battles of the Civil War.
Explanation:
