Answer: Northern Texas northward through Oklahoma, Kansas, Missouri and parts of Louisiana, Iowa, Nebraska and eastern Colorado.
Cultural diffusion is the spread of cultural trends across locations. Beliefs, practices, and ideas get shared from person to person, and sometimes even around the world through this diffusion, as happens with viral videos. Many cultural practices are spread by a type of cultural diffusion called expansion diffusion.
The answer is true because that helps them pinpoint locations across the globe.