What is at Newfoundlands four borders?

Answer 1

Newfoundland not including labrador is bounded in all four directions by the sea

where a belt of Canadian federal territorial waters extends 12 nautical miles seaward from the low tide line all along the coast

this is equally the case in the Atlantic Ocean & several of its bays to the east & south

in the strait of belle isle to the north

in the gulf of saint Lawrence to the west

& in Cabot strait to the southwest

but if you include labrador then the province as a whole shares a land border with the province of quebec everywhere to the west & south of labrador

& it also extends practically to the territory of nunavut at cape chidley in the extreme north

also

tho it is not technically at a border of Newfoundland

there is a Canadian territorial sea border with France midway between saint Pierre & the south central coast of Newfoundland

this falls roughly 6 nautical miles from both the french & the Canadian coasts