Languages and nationalities
Which languages Angelina understands and speaks, and to what extent, is a matter of some debate. It is obvious that she speaks both Norwegian and English at a native or near-native level. It is less obvious how much Swedish, Japanese, and Persian she knows, although it is commonly believed that she is familiar with these languages to varying extents, mainly due to the reported nationalities of certain family members.
Norwegian
Angelina was born in Oslo, Norway. She is regularly described as being Norwegian, as is her mother. It is widely assumed that Norwegian is her (Angelina's) native language, and there seems to be no evidence that this is not the case.
English
Angelina has been singing in English since she was 18 months old. Presumably she was also starting to speak English around that time, although the earliest video evidence we have of that is from when she was (around?) three years old.
Swedish
Angelinas father is Swedish. She has also been interviewed in Swedish, although she answered in Norwegian. (Swedish and Norwegian are very closely realted languages and have a high degree of mutual intelligibility.)
Japanese
Angelina's maternal grandfather is Japanese. It is known that her mother and uncle grew up in Japan and speak Japanese.
She has also sung in Japanese (with the aid of written lyrics).
Persian
Angelina's maternal grandmother is Iranian and speaks Persian (a.k.a. Farsi). She and Angelina are very close, so it is assumed that they can speak Persian with each other. However, direct evidence of this seems to be hard to come by.
Other languages
Angelina has been interviewed in German and (Brazilian) Portuguese, and probably other languages, as well, but she used an interpreter in these cases and did not speak these languages. Whether she showed any evidence of understanding the languages at all is a matter of personal opinion.
She has also sung in French.