D. Trade can keep countries from specializing in producing certain goods.
First one is B.
The next one is D.
I believe the last one is False.
With rivers, cities grew with receiving enough resources from the rivers like water and fish for survival. With rivers, they can ride to different cities and trade. Rivers are a very important part of nature. They can give you so many resources for survival.
The following is a list of contemporary ethnic groups. Membership of an ethnic group tends to be associated with shared cultural heritage, ancestry, history, homeland, language or dialect, the term culture specifically including aspects such as religion, mythology and ritual, cuisine, dressing style,
