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The movie takes place in New Orleans, Louisiana in the 1920's while the original story take place in Germany during the 1500's.
The Princess and the Frog was the last Disney movie (thus far) to be traditionally animated (hand drawn).
Tiana is voiced by Anika Noni Rose except during her childhood where she is voiced by Elizabeth M. Dampier. She is portrayed as being 19 years old in the movie. She is the first "modern" Disney Princess. This is due to the fact that she has a job, is working toward a career goal, maintains interracial friendships, encounters automobiles, is raised in a still-existing city, is surrounded by jazz music which is still a popular form of music today, and owns more than one outfit (11 in total).
Prince Naveen is voiced by Bruno Campos and is portrayed as being approximately 20 years old. Naveen is the prince of a fictional land called Maldonia. Disney purposely created the unknown country to make Naveen racially ambiguous and therefore show how a person's race isn't an important part of life.
Maldonia was based off of the real-life countries of Maldives and Macedonia, Greece. In the movie the country was said to have the official language of Maldaquesh which Disney derived from the Italian language. Naveen also mentions that in Maldonia there are two numbers between 28 and 29 called twenty-badini and twenty-cazini. Naveen's name means "new" in Indian. And if you look closely at the newspaper at the beginning of the movie when "Down in New Orleans" is being sung you can see that it says "Maldonia cannot be found on the map".
The Princess and the Frog explains the existence of the second star to the right which ties it to Peter Pan (but you'll have to watch the movie yourself to find out why :D ).
For a full list of cast members click here
For more movie fun facts click here
That's all for now! I hope you're reeeeaaaadyyy for the next Disney treasure we'll uncover!