history of the Russian Empire

Deductions

• history of a geographic region is for example history of the Russian Empire ⇐ (history of the Russian Empire is a history of a geographic region), (is a is inverse of is for example)
• history of the Russian Empire is a history of a geographic region ⇐ (history of a country or state is subclass of history of a geographic region), (history of the Russian Empire is a history of a country or state)
• history of a country or state is for example history of the Russian Empire ⇐ (history of the Russian Empire is a history of a country or state), (is a is inverse of is for example)