Eastern vs. Western Orthodox

The Eastern Orthodox church and the Western Christian churches have different ideas of the Holy Spirit. Which was the reason that eventually caused the split from one religion into two, the Eastern and Western. The difference was very minor and more of a tidious techinical idea, but it was said to be the contributing factor to the Great Schism(when the Chirch of Christ split into Eastern orthodox and roman Catholosism). The Eastern Orthodox beliefes say that the Holy Spirit proceeds only from The Father, where the Western Christianity believes that the Holy Spirit proceeds from both the Father and the Son.