What event led to the fall of the confederate capital, richmond, virginia?

a. lincoln’s assassination
b. grant’s siege at vicksburg
c. lee’s retreat from petersburg
d. sherman’s march through georgia

The answer is C. Lee's retreat from Petersburg

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.