The states still had the freedom to create their own laws and have their own constitutions (as long as they don't go against by the Constitution). The states have reserved powers.
The rights of the individuals are respected mainly by being listed in the constitution's first ten amendments, or Bill of Rights.
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The main reason why Christianity spread in the Byzantine Empire is that decades prior to the emergence of the Empire, Roman Emperor Constantine made Christianity the official religion of the Roman Empire, with they Edict of Milan, which he decreed in 313 AD.
We must remember that the Byzantine Empire is simply the Eastern Roman Empire, and when the Middle Ages started, the Byzantine Empire held land that had been christianizing for a over a century. Only a few areas of the Empire had to christianized in the Middle Ages, essentially areas at the edges of the Empire.
Bolsheviks formed part of the Red Army. They started a provisional government that led to the formation of communism and the Soviet Union in Russia. This group represents the end for the Russian Empire, and henceforth they controled the Russian Revolution.
Their role during the Russian Revolution was related to the Romanov Royal Family. Tsar Nicholas II possessed the title of Russian Emperor at that time, he was assassinated with his entire family by the Bolsheviks in 1917. This monarch had rather incompetent counselors, they aimed the tsar to kill people unfairly and stop attending their major problems- such as hungry. Bolsheviks presented themselves as the people's deffensors, and ended with the prestige and richness of not only royal family but nobles. Their provisional government was not rather stable, it took quite a while to stablish a Soviet Union.
We hold all truth to be self evident that men be treated the same or something like that