What allowed Japan to grow without the influence from other countries for centuries?

All of the following are examples of Japanese culture except...

Professional entertainers who attend guests during meals, banquets and other occasions. They are trained in various traditional Japanese arts, such as dance and music, as well as in the art of communication are known in Japan as:

A traditional Japanese popular drama with singing and dancing performed in a highly stylized manner. A rich blend of music, dance, mime, and spectacular staging and costuming, it has been a major theatrical form in Japan for four centuries:

The Japanese word for black ink painting; It is an East Asian writing and painting style that employs brush and black ink on paper. Gradations of black in sumi art are achieved by using black ink at full strength or dissolving it in water to lighten it.

Japanese wood block printing is also known as:

Japanese printmaker and painter who was one of the greatest artists of the ukiyo-e (“pictures of the floating world”) movement; he is known especially for his masterfully composed portraits of sensuous female beauties (1753- 1806) is:

A Japanese contemporary artist who works primarily in sculpture and installation such as the installation pictured is:

The Japanese watercolor technique that slowly builds up watercolour layers, a little at a time, to produce vivid colors is called: