I think T'ai-tsu is the person who made Changan his dynasty's capital
the answer may be d or b hope this helps
Answer: Industrialization Meant Economic Growth
Industrialization, along with new inventions in transportation including the railroad, generated economic growth. There was now a large working class, and this would eventually lead to conflict between workers and factory owners.
Explanation:
mate but I think it was human then they got conscience and then started building themselves