Where does “interprovincially” come from?

interprovincially (English) comes from English interprovincial, from English inter-, from Latin inter- — inter-.

interprovincially (English): Between provinces

Definitions

Step	Language	Word	Meaning
1	English	interprovincial	Occurring or existing between provinces
2	English	inter-	between, amid, among, during, within, mutual,...
3	Latin	inter-	inter-

interprovincially — Etymology, Origin & Word History | Etymology Explorer