This is the 178th most frequent French word.
national
"National" in French means "national" or "relating to a nation" in English.
Here, 'nationale' is used in an adjectival form to describe the word 'fête' (holiday), indicating that it pertains to the nation.
La fête nationale de la France est célébrée le 14 juillet.
The national holiday of France is celebrated on July 14th.
'National' here is used descriptively to denote that the park belongs to or is maintained by a national entity, emphasizing its importance and scope.
Ce parc est un parc national protégé.
This park is a protected national park.
In this example, 'nationales' modifies 'nouvelles' (news), suggesting that these are news items relevant to the nation as a whole.