What was the purpose of the constitutional convention?

The point of the event was to decide how America was going to be governed. Although it had been originally called together to revise the Articles of Confederation. 

Concurrent jurisdiction is the ability to exercise judicial review by different courts at the same time, within the same territory, and over the same subject matter. for instance, a domestic violence matter may be heard in either a general civil court or a family court in the same county.i hope that this you : )

Alloy of metals is the answer