It was introduced in 1958, following four years of development.

The Bill was eventually introduced following the general strike in 1926.

However, apartheid as an official policy was introduced following the general election of 1948.

A one-party state was introduced following a referendum in 1964.

These changes were introduced following a public consultation and review of export control legislation in 2007.

Additional restriction were introduced following an incident on 18 January 1989.

The intermediate level of administration was introduced following backbench pressure.

This was introduced following an agricultural crisis that lead people to leave the countryside and move into towns.

The award was introduced following two years of the ceremony being held off-air.

The character was introduced again following another reboot of Legion history in 2004.