1.The four major kinds of natural vegetation in the U. S. and Canada are grassland, desert scrub, tundra, and what Permafrost
Swamp
Forest
Lakes

2.The separates the east flowing rivers from the west flowing rivers.
Death Valley
Ohio River
Mississippi River
Susquehanna River

3. 2nd largest mountain ranges found in the United States, located on the eastern part of the United States. *
4 points
Rocky Mountains
Andes Mountains
Himalaya Mountains
Appalachian Mountains

1. permafrost

2. I think it's the mississippi river

3. Appalachian Mountains

Explanation:

the right answer for the question that is being asked and shown above is that: "their policy of "divide and rule" pitted political groups against each other to keep any one group from becoming too powerful.  " the  participant in european imperialism is being described below is that  their policy of "divide and rule" pitted political groups against each other to keep any one group from becoming too powerful. 

letter a is the answer