The word nationally is an adverb. Nationally means (1) with regard to a nation taken as a whole, (2) extending throughout an entire nation.
The following articles and web pages elaborate on the word nationally.
The Austin Convention & Visitors Bureau markets Austin nationally and internationally as a business and leisure destination, thus enriching the community's quality of life.
The New Orleans Convention & Visitors Bureau is a nationally accredited destination marketing organization and economic development corporation. The NOCVB attracts visitors, special events, and conventions to New Orleans and the surrounding area.
The Detroit Metro Convention & Visitors Bureau (DMCVB) is an organization that promotes metro Detroit regionally, nationally and internationally as a convention, business meeting and tourism destination.
https://www.visitdetroit.com/
The following digital image illustrates the word nationally.
Sunrise Over a Nationally Owned and Preserved Park