Answer:
The answer is below
Explanation:
1. Neolithic age often referred to as the Stone age existed between 10,000 BC to 3,000 BC
2. Farming begins in Southwest Asia around 8,000 BC
3. River Valley civilization started in Mesopotamia around 4,000 BC
4. Bronze age existed between 3,000 BC to 1,200 BC
Four characteristics shared by early river valley civilizations are:
1. Hereditary rulers
2. Organized political states
3. Irrigation
4. Polytheism
<span>Building railroads stimulated the national economy not only by improving transportation, but also by creating a huge demand for iron, wooden crossties, bridges, locomotives, freight cars, and various kinds of equipment needed to operate railroads.</span>
They were a a competition of sort where only southern white people were allowed to vote. hope I helped! :D brainleist?
