I would say that they are placed into families.
Answer: The answer is True
Explanation:
The answer is D.
Many other countries, most notably Northern European countries, have higher GDP per capita (per-person) than the United States.
The correct answer is B, the mongols. They violently sacked Baghdad in 1258.
Answer: They have larger ranges and thresholds.
Explanation: The rank-size rule defines range as the longest distance that a customer will travel to purchase a good or service. Threshold is the minimum market needed to support the supply of a product or service. It is assumed that customers which travel longer distances to purchase a higher-order good or service, and a provider of such goods and services will require a larger customer base to make a profit. Thus, higher-order services have larger ranges and thresholds.
