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.

According to the law on specified alien species, the import of certain organisms is prohibited.

By regularly checking the key performance indicators, you can understand the performance of the company and devise improvement measures.

He is doing a special exercise to strengthen his extensor indicis.

The Paleolithic is the first era of human history.

The Bronze Age was an important period in human history.

The Neolithic was an important period in human history.