In the early 1970's, a low-cost but highly profitable genre of American movies emerged.

And a new genre of software has emerged to block ads entirely.

The genre first emerged in the 1990s as an underground movement, particularly in the American state of California.

Whilst the genre emerged towards the late-1980s, it was not until the 1990s that progressive metal achieved commercial success.

The genre emerged during the final decades of the 18th century.

During this period, new genres like short stories, poems, essays, novels and plays also emerged.

The genre emerged in the late 1980's, a long-delayed response to 20 years of feminist critique.

As this genre emerged it performed distinct activities in the Korean art field.

In the 1990s a new genre emerged into the mainstream, combining elements of pop with punk rock.

The genre emerged first in Chinese popular literature.