True or false: the settlements south of the yangtze river valley were based on the cultivation of dry crops, such as wheat.

Why caused john quincy adams to write the monroe doctrine?

How did the construction of the erie canal improve transportation in the united states in the 1820s? a. the canal connected the great lakes to the mississippi river. b. the canal connected the great lakes to the ohio river. c. the canal connected the atlantic and pacific oceans. d. the canal connected the great lakes to the atlantic ocean.

What are the major problems with a command economy?