The ruins from the Kofun Period are important for a deep understanding of Japanese history.

The Ashikaga era is a part of Japanese history.

The Asuka Period is a part of Japanese history, a time when culture and arts greatly developed.

The Muromachi period is a part of Japanese history, a time when many cultural changes occurred.

The Kamakura period was a very important time in Japanese history.

The interior of this room is very beautiful.

Recently, it seems that 'Zukkon Bakkon' is becoming popular.

The maximum memory of this computer is 16GB.

The daimyo was the ruler of that region.

Please substitute a value into this equation.