Which list of places requires semicolons instead of commas?

North Dakota, South Dakota, North Carolina, South Carolina, and West Virginia

Europe, Asia, Africa, and Australia

Sacramento, California, Denver, Colorado, Phoenix, Arizona, and Santa Fe, New Mexico

Brazil, Venezuela, Colombia, Ecuador, Chile, Argentina, Peru, and Bolivia

Sacramento, California; Denver, Colorado; Phoenix, Arizona; and Santa Fe, New Mexico.

The list of places that requires semicolons instead of commas is:

Brazil; Venezuela; Colombia; Ecuador; Chile; Argentina; Peru; and Bolivia.