How to Use "obligatory" with Example Sentences

1. Yet china made the system obligatory only in 1995 .
2. The system of obligatory residence permits was introduced in the 1950s to control internal migration .
3. But individually , we see the opportunity to mold the institution to fit our own values-even more now that it 's not obligatory .
4. Some muslim britons contract an islamic marriage ( but not acivil one ) and then fail to confer on the bride the marriage settlement that would be obligatory in say , pakistan .
5. In far-off brunei , by the south china sea , the sultan issued orders for the obligatory performance of special prayers for israel 's defeat .