They occur commonly in the Midwest.
Answer:
The ability to produce a variety of goods and services
Explanation:
Diversified economies are more likely to be self-sufficient as well as longer lasting. The economy can help to support within itself and continue to build. When a sector leaves, the country will become dependent on an outside source for that sector.
This photo has facts about that info on it
I believe its the Rhine-Main-Danube Canal. Hope that helps!
A-through an optimistic viewpoint.