The answer is D, they had a much better industrial base.
<span>C. Missouri Compromise and Compromise of 1850</span>
Answer:
5,000 years ago.
Explanation:
The Stone Age marks a period of prehistory in which humans used primitive stone tools. Lasting roughly 2.5 million years, the Stone Age ended around , when humans in the Near East began working with metal and making tools and weapons from bronze.