March 20 Major Events in World History
1913
Song Chiao-jen (Song Jiaoren), founder of China’s Kuomintang, is mortally wounded in a Shanghai assassination attempt on 20 March 1913 and dies two days later, altering the course of early Republican China.
1914
The Curragh incident unfolds on 20 March 1914: over 100 British Army officers threaten to resign rather than enforce Home Rule in Ulster, reflecting tensions that foreshadow Irish Partition.
1916
Albert Einstein submits his paper The Foundation of the General Theory of Relativity to Annalen der Physik on 20 March 1916, formally introducing his completed theory of gravity.