
landesweit
nationwide / statewide
Valid, widespread, or taking place throughout an entire country or federal state.
Die neuen Corona-Regeln gelten ab morgen landesweit.
The new COVID rules apply nationwide starting tomorrow.
nationwide
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nationwide / statewide
Valid, widespread, or taking place throughout an entire country or federal state.
Die neuen Corona-Regeln gelten ab morgen landesweit.
The new COVID rules apply nationwide starting tomorrow.
The word is made up of 'Land' (country/state), the linking element '-es-', and 'weit' (wide/far). It literally means 'as far as the country/state extends' and therefore describes a geographic extent.
Die Hitzewelle betrifft das Land landesweit.
The heat wave is affecting the entire country nationwide.
The ending '-weit' is very productive and can be combined with many geographic terms to describe their area of application. Examples are 'europaweit' (Europe-wide), 'weltweit' (worldwide), or 'bundesweit' (nationwide/federal).
Das Produkt ist mittlerweile weltweit bekannt.
The product is now known worldwide.
'Landesweit' can be used as an adverb or as an adjective. As an adverb, it often appears at the beginning of a sentence for emphasis; as an adjective, it stands before a noun and is declined.
Landesweit kam es zu Stromausfällen.
There were power outages nationwide.
The 'Land' in 'landesweit' can refer to an entire country (e.g., Germany) or to a federal state (e.g., Bavaria). The exact context makes clear which geographic area is meant.
Die Bundestagswahl findet landesweit in ganz Deutschland statt.
The federal election takes place nationwide throughout Germany.
nationwide
Bundesweit and landesweit both describe a reach extending across an entire area. Bundesweit explicitly refers in Germany to the entire federal territory, while landesweit can mean an entire country or just a single federal state. Therefore, check which area of reference is meant in the context.

Die neue Regelung gilt landesweit in diesem Bundesland.
The new regulation applies throughout this federal state.
Die neue Regelung gilt bundesweit in allen Teilen Deutschlands.
The new regulation applies nationwide in all parts of Germany.