What nationality was the painter Chaim Soutine?

Please could you explain how a Belarusian painter had French nationality? Did he actually change it or is the question wrong?

Clidge, Not born in Lithuania; he studied there in his late teens. Born in Belarus, lived in France from age 20.

In 1913, with his friends Pinchus Kremegne and Michel Kikoine, he emigrated to Paris, where he studied at the École des Beaux-Arts under Fernand Cormon. He soon developed a highly personal vision and painting technique. Chaim Soutine basically borned in Smilavichy, Belarus with Jewish origins and emigrated to Paris

That Cøunt, Ray Bumpkin, Yes... my thoughts exactly.

That Cøunt, Ray Bumpkin, I also wondered that, considering he was born in Lithuania