Without limiting its effect apart from this section, this Part also has the effect it would have if it were confined, by express provision, to arbitrations involving:
(a) places, persons, matters or things external to Australia; or
(b) disputes arising in the course of trade or commerce with another country, or between the States; or
(c) disputes between parties at least one of which is a corporation to which paragraph 51(xx) of the Constitution applies; or
(d) disputes arising in the course of trade or commerce in a
Territory.