What is the title of a law that applies uniformly across the entire country?

The title that accurately describes a law that applies uniformly across the entire country is "National Law." National laws are established by the central government and are applicable to all states and territories within the country, ensuring that there is a consistent legal framework that governs issues uniformly across the nation. This helps maintain order and predictability in legal matters, regardless of local variations in state laws.

Central Law typically refers to laws passed by the central legislative body and may not necessarily imply nationwide applicability, while a Uniform Act tends to be enacted by various jurisdictions but does not always mean it is adopted in the same form in every location. Income Tax is a specific type of law concerning taxation and does not pertain to the broad concept of uniformity across the legal landscape. Hence, "National Law" is the most fitting choice for a law that operates uniformly across an entire country.