Though such inconsistencies still appeared during the 20th century, they were less frequent.

There is no historical evidence to support these legends, which first appeared during the 19th century.

The churn drill appears in Europe during the 12th century.

New societies have periodically appeared at the University during the 20th century.

They appeared during the 18th century and were popular throughout the 19th century.

French missionaries and traders first appeared in the area during the late 17th century.

Irish characters appeared in a number of plays during the 18th century.

The term drive shaft first appeared during the mid 19th century.

He appeared on Broadway and in films during the early 20th century.

Desalination appeared during the late 20th century, and is still limited to a few areas.