What was the beginning of schism between Roman and eastern orthodox churches?

The first Unified Church began in 325, when Emperor Constantine of the Roman Empire declared Christianity the religion of the empire, he then called an Ecumenical Council (this was the first) where all of the separate churches (which had been practicing in hiding during the pagan era) came together to sort out their differences and become on Holy Orthodox Church.

Within this group were Egyptian, Greek, Thracian, Roman, Gual, Antioch and Palestinian churches and more, they ironed out traditions relative to Easter, language, Icons, marriage, wars, politics, and everything the Orthodox church continues today.

It was decided that each church would rule its own set of churches based on geography and language. Each church would follow the same stature, but language was to be the common language of the people (mostly that was Latin or Greek at the time). In the 9th century, Rome was sacked, the city was dead and the eastern empire flourished. The west lay in ruin. France, Spain, and the Italian States and England had been conquered by feudal leaders and the church remained. But crime, and terror were high and they needed a strong unifying leader to end the wars.

In the 10th century the western Churches, of France, England Spain and Italy formed the Catholic Orthodox Church (a branch of Orthodox faith such as Greek, or Russian Orthodox). Under the Catholic Church they were ruled in disputably by one man (Pope) and many traditions were changed, such as marriage of priests, days of holidays like Easter. In 1031 on top of numerous often views as violent and corrupt changes, the Catholic Church severed ties with the Eastern Orthodox churches.

Today there can never again be an Ecumenical Council as there were before the Schism, because it would require all of the original foundations of the Orthodox Church including the severed Catholic Church...