Which was not a major economic feature of river valleys?
a. railroads
b. fishing
c. trade
d. highways

What are some natural resources found in midwest

What is the problem with blowing up large asteroids?

When studying the calumet region of illinois and indiana, alfred meyer noted four stages of development as new groups occupied this land. in stage 3, farming communities grew large quantities of crops to sell. a. subsistence agriculture b. conurbanization c. commercial agriculture d. fur trading