What was the "porfiriato"? a. a period in mexican history marked by the dictatorship of porfirio diaz and his wide spread corruption b. a period in mexican history marked by the presidency of porfirio diaz and his policies of social justice c. a period in mexican history marked by the election of porfirio diaz and his corrupt successors d. a period in mexican history marked by the assassination of porfirio diaz and his generous sons?

answer; /// the correct answer is evidence of the olmec civilization has been found in southern american in a hot steamy forest, archaeologists have found earthen artifacts at several sites that were evidence of the olmec civilization. these   artifacts were mounds,courtyards and pyramids build of stones, also on top of the mounds were many monuments made of stone, some of these stone structures are very large, they weigh as much as 44