Question: 전 세계
Answer: 1875-02-21; 21 2월 1875; 1875 2월 21; 1875-02-21; 21 02 1875; 21-02-1875; 02-21-1875; 1875 february, 21; 02/21/1875; 21/02/1875; 02 21 1875; 1875 02 21