ens ian ▁Cr us ade , ▁achieved ▁their ▁goal ▁of ▁maintain ing ▁do ctr inal ▁unity . ▁ ▁Four th ▁Cr us ade , ▁ 1 2 0 2 – 1 2 0 4 ▁ ▁The ▁Four th ▁Cr us ade ▁was ▁initi ated ▁in ▁ 1 2 0 2 ▁by ▁Pope ▁In noc ent ▁III , ▁with ▁the ▁intention ▁of ▁inv ading ▁the ▁Holy ▁Land ▁through ▁Egypt . ▁Because ▁the ▁Cr us aders ▁lack ed ▁the ▁funds ▁to ▁pay ▁for ▁the ▁fleet ▁and ▁prov isions ▁that ▁they ▁had ▁contract ed ▁from ▁the ▁Ven et ians , ▁Dog e ▁En rico ▁D and olo ▁en list ed ▁the ▁cr us aders ▁to ▁restore ▁the ▁Christian ▁city ▁of ▁Z ara ▁( Z ad ar ) ▁to ▁ob ed ience . ▁Because ▁they ▁subsequently ▁lack ed ▁prov isions ▁and ▁time ▁on ▁their ▁vessel ▁le ase , ▁the ▁leaders ▁decided ▁to ▁go ▁to ▁Constantin ople , ▁where ▁they ▁attempted ▁to ▁place ▁a ▁By z antine ▁ex ile ▁on ▁the ▁throne . ▁After ▁a ▁series ▁of ▁misunder stand ings ▁and ▁out break s ▁of ▁violence , ▁the ▁Cr us aders ▁s ack ed ▁the ▁city ▁in ▁ 1 2 0 4 ▁and ▁established ▁the ▁so - called ▁Latin ▁Empire ▁and ▁a ▁series ▁of ▁other ▁Cr us ader ▁states ▁throughout ▁the ▁territ ories ▁of ▁the ▁Greek ▁By z antine ▁Empire . ▁This ▁is ▁often ▁seen ▁as ▁the ▁final ▁breaking ▁point ▁of ▁the ▁Great ▁Sch ism ▁between ▁the ▁Eastern ▁Orth odox ▁Church ▁and ▁( West ern ) ▁Roman ▁Catholic