Why are the following locales ambiguous? For each name, give two possible locations.

a. Rome
b. Athens
c. Paris
d. Notre Dame

a. There is a Rome in Italy, but there are also 25 cities named Rome in the US (Louisiana, Alabama, 2 in Mississippi, Georgia, South Carolina, Tennessee, Missouri, Kentucky, 6 in Ohio, Indiana, Kansas, Illinois, Iowa, Pennsylvania, 2 in New York, Wisconsin, Oregon, and Maine.)
b. There is an Athens in Greece, but there are also 22 cites named Athens in the US: (Louisiana, Texas, Arkansas, California, Georgia, Alabama, Tennessee, Kansas, Virginia, West Virginia, Kentucky, Michigan, Indiana, Illinois, Missouri, Ohio, Pennsylvania, New York, Vermont, Maine and Wisconsin.)
c. There is a Paris, France and also a Paris, Texas as well as 23 other towns named Paris in the US.
d. Notre Dame, Puerto Rico; Notre Dame, Maine; Notre Dame, Mauritius. This is also the name of a cathedral in Paris and a college in Indiana.