Answer:
were introduced into American geography in the 1920s by Carl Sauer
This photo has facts about that info on it
Answer:
B. The science of determining the order of events in relation to each other, without a specific date.
Explanation:
you can look it up on the Wikipedia and you see something similar to B.
DescriptionInternational trade is the exchange of capital, goods, and services across international borders or territories because there is a need or want of goods or services. In most countries, such trade represents a significant share of gross domestic product. Wikipedia