Answer:
A. Spices should be your answer.
Explanation:
Many Asian countries made rich spices that the Europeans enjoyed. They would trek across the continents to get to places such as India where they would trade things for spices.
The concept of Peak Oil was first developed in the 1950's by the geologist M. King Hubert.
<em>After World War II, many people moved from the cities to _____.
</em>
suburbs