By the mid-1970s, structured rules for lengths of speeches developed.

This rule probably developed to make it harder to run out after the first shot.

Through these successive generations, however, the rules developed and changed significantly.

There were no rules to the games, the rules developed as we went along.

As a result, a new contest system was introduced and new rules developed.

I understand that these rules have developed for the safety of all individuals and species involved.

The rules developed in taxation and rating cases could not be applied more generally.

To disown the body will not prevent it from going ahead, the US will simply lose all influence over the way the rules develop.

So we need our own rules and our own special tools to develop.

Minor-planet naming is not always a free-for-all: there are some populations for which rules have developed about the sources of names.