Q: Satsuma Province ( , Satsuma-no Kuni) was an old province of Japan that is now the western half of Kagoshima Prefecture on the island of Kyushu. Its abbreviation is Sasshu ().

Answer this question: the satsuma is named after a province in which country?
A: Japan
Explain how we arrive at this answer:
Explanation: To answer the above question, the relevant sentence is: Satsuma Province ( , Satsuma-no Kuni) was an old province of Japan that is now the western half of Kagoshima Prefecture on the island of Kyushu.