"nationwide" in the adjective sense
1. countrywide, nationwide
occurring or extending throughout a country or nation
"the event aroused nationwide interest"
"a countrywide fund-raising campaign"
"nationwide" in the adverb sense
1. nationally, nationwide, across the nation, across the country
extending throughout an entire nation
"nationally advertised"
"it was broadcast nationwide"
Source: WordNet® (An amazing lexical database of English)
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