Final answer:
The author uses a chronological structure to trace the evolution of currency and contrasts different types of early money in "From Barter to Bitcoin."
Step-by-step explanation:
The author uses a chronological structure to trace the evolution of currency from past to present in the text "From Barter to Bitcoin." This allows the reader to understand how coins were replaced with paper money over time and how this improvement impacted the way people do business.
The author also contrasts different types of early money to show how some countries were more advanced than others. This comparison helps to highlight the progression of currency and its impact on business.