Answer:
The American Civil War is often referred to as the “first modern war” due to an unprecedented mobilization of the civilian base in both Union and Confederate territory, and because it was hallmarked by technological innovations that changed the nature of battle.
Explanation:
D) The Inca Capital city of Machu Picchu was lost to the modern world until 1911
The answer is atomic bombs
Well, they didn't have slaves anymore and had to work harder and actually pay their workers.
Answer:
Underground Railroad.
Explanation:
Slavery was abolished by President Lincoln, but many slaves did free themselves and go north. If they reached the north they were free, so that's what they did. The Underground Railroad wasn't actually a railroad, it was a secret code to a path that went north. One of the post famous "conductors", someone who helped fellow slaves escape to the north, was Harriet Tubman.
