Hmmmm, I think it is slavery
Italy and russia. Because they were looking for a better life in the United States.
To put it simply, Kyoto was built based on chang'an but on a smaller scale.
Both cities have similar layout. At that time, the layout of Chang'an city is perfect for the purpose of Capital city in the aspect of it's defense and land division.
hope this helps
Answer:
B. Fertile land for agriculture.