Relations between East and West had long been embittered by political and ecclesiastical differences and theological disputes.
Pope Leo IX and Patriarch of Constantinople Michael Cerularius, heightened the conflict by suppressing Greek and Latin in their respective domains. In 1054, Roman legates traveled to Cerularius to deny him the title Ecumenical Patriarch and to insist that he recognize the Roman Catholic claim to be the head and mother of the churches.
Cerularius refused. The leader of the Latin contingent excommunicated Cerularius, while he excommunicated the legates.

Mutually.
A mutuaally consented divorce.

Do you have any proof, quotation or link to an authority calling the Catholic church a sect of the Orthodox ?


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