What was a major cause of the civil wars in many central american nations in the 1970s and 1980s?

It was because all of the economic differences between classes 
hope i helped you out in some type of way!!! :) 

Sir thomas more, venerated in the catholic church as saint thomas more, was an english lawyer, social philosopher, author, statesman, and noted renaissance humanist. he was also a councillor to henry viii, and lord high chancellor of england from october 1529 to 16 may 1532. i found this information on wikipedia