Which was a major challenge in Mexico in the early twenty-first century? A . political unrest and civil war B. ongoing violence caused by Mexico's drug cartels C. the threat of a communist takeover. D. constant guerrilla warfare from neighboring countries

B ongoing violence caused by Mexico's drug cartels

Explanation: Violence continues to rage in Mexico more than a decade after former President Felipe Calderon launched a crackdown on drug cartels.

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b. ongoing violence caused by Mexico's drug cartels

Explanation: jus took da quiz

i think option 3. would be ur best bet and u need to write it urself

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