Was the breakup of the USSR and the Eastern Bloc nations inevitable (not able to be stopped)?

No the Eastern Bloc of Berlin was very unstable. Not only because the Russian and some of their former allies such as the USA started to have issues which caused a "cold" war in other words there was no fighting between both sides directly even tho they aided the North Vietnamese during Vietnam to destroy the US. Anyways when Germany lost the second world war Russia being Russia took half and left France, the US, and England to split the remaining half. Russia took it way to much for them to handle and with their strict visiting policy they treated the Germans badly keeping them confined to the city. Finally the US told Russia to tear down the wall and they finally agreed to. Over all Russia has never been to strong as a nation until the late 90s. Still as it stands their country is heavily run by the Mafia and other crime organizations. But yeah that should help.

answer: what was the us involvement in ww1? although the u.s. tried to remain neutral when ww1 broke out, it finally joined on april 6, 1917 after declaring war on germany. the reason for america to become involved in ww1 was germany's unrestricted submarine warfare, which had already sunk several american merchant ships.

explanation:

the church governed the society after the empire fell.   constantine took charge of rome and ended the confusion which had over religion and made christianity as the only religion and that started ruling the roman empire. he also divided the empire into two and fortified the eastern part.   he ruled the eastern part.