How do we know Roma are from India? Linguistic Analysis.
Linguistically, cultures have similar words.
Some words are older than other words.
Laptop is a new word.
Cow is an old word.
So, cultures who jointly use "Laptop" might not have a shared history.
So, cultures who jointly use "cow" might have a long shared history.
The words jointly shared by Roma and India are words such as "cow".
31,7. 2015. Welles, Donna E.