emon ial ▁complex . ▁Const ruction ▁activity ▁is ▁evident ▁from ▁the ▁Early ▁Classic ▁through ▁to ▁the ▁Middle ▁Classic ▁( c . ▁AD ▁ 4 0 0 – 6 0 0 ). ▁At ▁this ▁time ▁T az um al ▁had ▁important ▁links ▁with ▁the ▁May a ▁city ▁of ▁Kam inal ju y u ▁in ▁the ▁Valley ▁of ▁Gu atem ala , ▁which ▁acted ▁to ▁extend ▁the ▁influence ▁of ▁the ▁powerful ▁central ▁Mexican ▁city ▁of ▁Te ot ih u ac an ▁into ▁the ▁Pacific ▁coast al ▁areas ▁of ▁Gu atem ala ▁and ▁El ▁Salvador . ▁During ▁the ▁Late ▁Classic ▁T az um al ▁had ▁links ▁with ▁Cop án ▁in ▁H ond uras , ▁as ▁ev iden ced ▁by ▁architecture , ▁sculpt ure ▁and ▁cer am ics ▁at ▁T az um al . ▁The ▁cer am ic ▁sequence ▁at ▁T az um al ▁continues ▁un inter rupted ▁from ▁the ▁Classic ▁period ▁through ▁to ▁approximately ▁AD ▁ 1 2 0 0 . ▁A ▁number ▁of ▁Early ▁Classic ▁features ▁indicate ▁links ▁with ▁Ch ichen ▁It za , ▁in ▁the ▁northern ▁Y uc at án ▁Pen ins ula , ▁or ▁with ▁T ula ▁in ▁central ▁Mexico . ▁ ▁The ▁population ▁of ▁T az um al ▁co ex isted ▁with ▁the ▁N ah ua - spe aking ▁P ip ils ▁from ▁the ▁Classic ▁through ▁to ▁the ▁Early ▁Post class ic ▁until ▁at ▁least ▁AD ▁ 1 2 0 0 . ▁The ▁P ip il ▁influence ▁may ▁have ▁been ▁due ▁to ▁trade ▁with ▁neighbour ing ▁P ip il ▁populations ▁rather ▁than