▁was ▁the ▁last ▁great ▁Ol m ec ▁centre . ▁Ol m ec ▁art is ans ▁sculpt ed ▁j ade ▁and ▁cl ay ▁figur ines ▁of ▁J agu ars ▁and ▁humans . ▁Their ▁icon ic ▁giant ▁heads ▁- ▁believed ▁to ▁be ▁of ▁Ol m ec ▁r ul ers ▁- ▁stood ▁in ▁every ▁major ▁city . ▁ ▁The ▁Ol m ec ▁civil ization ▁ended ▁in ▁ 4 0 0 ▁BC , ▁with ▁the ▁def acing ▁and ▁destruction ▁of ▁San ▁Lorenzo ▁and ▁La ▁V enta , ▁two ▁of ▁the ▁major ▁cities . ▁It ▁never theless ▁spawn ed ▁many ▁other ▁states , ▁most ▁not ably ▁the ▁May an ▁civil ization , ▁whose ▁first ▁cities ▁began ▁appearing ▁around ▁ 7 0 0 - 6 0 0 ▁BC . ▁Ol m ec ▁influ ences ▁continued ▁to ▁appear ▁in ▁many ▁later ▁Mes o amer ican ▁civil izations . ▁ ▁C ities ▁of ▁the ▁Az te cs , ▁May as , ▁and ▁Inc as ▁were ▁as ▁large ▁and ▁organized ▁as ▁the ▁largest ▁in ▁the ▁Old ▁World , ▁with ▁an ▁estimated ▁population ▁of ▁ 2 0 0 , 0 0 0 ▁to ▁ 3 5 0 , 0 0 0 ▁in ▁T eno cht it lan , ▁the ▁capital ▁of ▁the ▁Az te c ▁Empire . ▁The ▁market ▁established ▁in ▁the ▁city ▁was ▁said ▁to ▁have ▁been ▁the ▁largest ▁ever ▁seen ▁by ▁the ▁conquist adors ▁when ▁they ▁arrived . ▁The ▁capital ▁of ▁the ▁C ah ok ians , ▁C ah ok ia , ▁located ▁near ▁modern ▁East ▁St . ▁Louis , ▁Illinois