Select the correct answers. Which two farming advances developed during the Zhou dynasty?
iron plow
fertile silt of Huang He River
bronze tools
crop rotation

An alliance of two political parties is know as? a. majority b. coalition c. candidate d. government

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 deadly disease cost many workers their lives before dr. william gorgas found a treatment?