<span>The immediate cause of its fall was pressure by the Ottoman Turks. The Ottomans had been fighting
the Byzantines for over 100 years by this time. In 1454, Constantinople
finally fell to them and their conquest of the Byzantine Empire was
complete.</span>
Basically the the countries made this system during/after the cold war. The first world is the highly developed countries with high literacy rates and less unemployment (mostly people thing of western countries aka the U.S). The second world is usually known by the Eastern Bloc who were former industrial socialists.
Ancient Grecian Government
Ancient Greece was the beginning of democracy. In 507 BC Cleisthenes introduced a new form of government and principle which was "rule by the people" and leaders were elected.
This system was divided into three groups: writers of the laws, a council of representatives from each tribe, and courts where citizens argued cases before randomly-selected jurors.
Ancient Roman Government
Roman government went through many changes during its existence including city state, kingdom, republic, and imperial periods. Its main principle was that of "republic" in which leaders were elected and only for a limited time.
Like the Greeks, the Republican Roman government had three separate branches of government but they operated a little bit differently: legislative (makes laws) with the Senate and assemblies, executive (enforces laws) led by two consuls, and judicial (interprets laws) with eight judges.
