Answers

2016-03-02T18:06:33+05:30
The greatest chola ruler was rajendra chola. i think that his achievement is building of a new capital city...
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2016-03-02T18:30:06+05:30
The greatest chola  ruler was Raja Raja  chola . 
his achievements -
 - he built the greatest shiva temple in tanjavur .
 - he was successful in most of his conquests .
for more references you can search in google or wikipedia .
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