countrywide
adj.happening or existing in every part of a country. You use this to describe something that covers the whole nation, like a law or a problem.
adj.extending throughout or affecting the entire territory of a nation. Typically used attributively to modify nouns related to distribution, policy, or infrastructure.
“The government is building a countrywide network of high-speed trains.”
“The new law will be enforced countrywide starting next month to ensure consistency across all states.”
“The sudden drop in temperatures led to a countrywide shortage of heating oil, forcing the government to implement emergency rationing measures in the northern provinces.”
“Coalescing out of countrywide protests that followed the collapse of a train station that winter, it is one of the largest student movements in Europe .”