The North Atlantic Treaty Organization (NATO) has got its $31^{st}$ member nation ____ on $5^{th}$ April 2023.
A | Khilafat Movement | (I) | Mahatma Gandhi’s biographer |
B | Jallianwala Bagh Massacre | (II) | Turkish ruler |
C | Kemal Ataturk | (III) | 1919 |
D | Louis Fisher | (IV) | 1919-1920 |