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

The Heian period was a time when Japanese culture developed greatly.

Living in this age is very exciting.

The feudal system in Japan existed from the Heian period to the Muromachi period.

The culture of the Nara period played a very important role in Japanese history.

During the Ice Age, the climate of the Earth changed significantly.

He survived through the Dark Ages.

This piece of art reflects the zeitgeist of its time.

The Age of Enlightenment was a period when science and reason were emphasized.

The Yayoi period is a part of Japanese history.