The period between 1348 and 1420 witnessed the heaviest loss.

The period between 1950 and 1970 witnessed the emergence of many new styles.

"The period 1870-1914 witnessed a revolution in English education".

The postwar period also witnessed significant improvements in housing conditions.

This period has also witnessed significant reshuffle within the major political players.

The period from 1946 to 1948 witnessed intense agitations throughout the state and the district.

The post-1972 period has thus witnessed important structural changes in British local administration.

The period from 1946 to 1960 also witnessed a significant increase in the paid leisure time of working people.

The period from 1975 to 1994 witnessed the growth of his fame at great speed.

The period witnessed the growth of the rum trade as well.