Global positioning system (gps)
As Rome expanded, the people they conquered became their subjects. As such, the sheer size of Rome and the vast number of people (all of which came from different cultures with different religions and languages) made it hard for the government to successfully rule.
He inherited the principality of Moscow
Because there needed to be legislation to rule the new country with. The Constitution was not yet written, and this was what was there instead. After the Articles of Confederation failed, the Constitution was instituted and enforced.
In muslim society social groups were based on religion
