Answer:
I would say what was most important would be the adoption of agriculture. Humans no longer had to move around and spend their days solely focusing on finding food. Being able to settle down and make one's own food allowed humans to have free time, and create hierarchies and languages and art, creating societies and civilization.
The answer is d. slaves were considered prisoners of war and kept in confinement.
Answer:
Hello! Your answer here is the expansion of railroads. The railway allowed people to flock to cities and allowed people to travel newer places as well. Business boomed due to the railway with the mass increase of people and goods. Railroads answered the need to transport goods quickly to distant markets and to get the goods to ports where they could be taken by ship to even more distant markets overseas; railroads also brought raw materials to ports close to factories.
