Salernitana were promoted into Serie A with a 3-0 win at Pescara on Monday.
The Campanian 'Granata' were last in the top flight in 1998-'99.
They gained mathematical certainty of going up after Monza lost against Brescia.
Empoli are already up as Serie B champions.
Monza, Lecce, Venezia and Cittadella will now play off for the last promotion spot.
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